Why is this Languages meme funny?

Question

Accepted Answer

### Level 1: Missing the Point  
Imagine a teacher is trying to give you the answer to a riddle, and the answer is actually the word **“this.”** The teacher writes **“this”** on the board and points to it, saying “**This** is the answer.” But you, the student, think the teacher is just using the word “this” like we do in everyday speech, not as the actual answer. So you keep asking, “No, really, what’s the answer?!” and the teacher keeps pointing at the word on the board, getting more and more frustrated, shouting “**This**! This is the answer!” Now you’re both upset — the teacher because they feel the answer is right in front of you, and you because you feel like you’re not being told anything new. It’s a silly misunderstanding over a single word. That’s exactly what’s happening in the meme: two people are essentially arguing because one of them thinks the other isn’t answering, when in fact the answer **is** a tricky little word right under their nose. It’s funny (and a bit relatable) because sometimes we can be shouting the truth and still completely miss each other’s point, all because of how it’s said.

### Level 2: What Is the Difference?  
If you’re a newer coder scratching your head at this meme, don’t worry—**JavaScript** and its **`this` keyword** confuse everyone at first! The scene comes from the popular *American Chopper* meme template where a father and son yell at each other (usually about something ridiculous). Here, they’re arguing about **arrow functions** vs **normal functions** in JavaScript, specifically about how the word `this` behaves in each. The text in each panel shows their conversation: the older guy keeps saying *“THIS is the difference between arrow functions and normal functions,”* and the younger guy keeps shouting back *“What **is** the difference?!”* They’re talking past each other in true comedic fashion. The punchline is that the very word **“this”** *is* the answer to the question, but the poor junior developer doesn’t realize it! It’s like a classic misunderstanding where one person is giving the answer, but the other person thinks they’re still just yelling without explaining.

So, what **is** the difference between an arrow function and a normal function? It mostly comes down to how `this` works inside them. In JavaScript, `this` is a special keyword that refers to the “context” of the function call — basically, *who* or *what* is calling the function. For a **normal function** (one you declare with the `function` keyword or as a method), `this` will usually refer to the object that calls it. For example, if you have an object `car` with a method `start()` defined as a normal function, when you call `car.start()`, inside that function `this` will refer to `car`. However, if you just call a normal function on its own (not as a method of an object), `this` might end up referring to something unintended (like the global object or `undefined` in strict mode). This dynamic binding can lead to surprises, especially for newcomers.

**Arrow functions**, introduced in ES6 (2015), behave differently. An arrow function doesn’t create a new `this` at all. Instead, it *captures* the `this` value from the surrounding context where it’s defined. This is often described as **lexical binding** of `this`. In simpler terms, an arrow function’s `this` is fixed — it’s the same `this` as outside the function. If you use an arrow function as a method or callback, it won’t reset who `this` is. This can be super convenient! For instance, in older code before arrow functions, you might see something like:

```javascript
const that = this;              // preserve `this` in `that`
button.addEventListener('click', function() {
    console.log(that.value);    // use preserved `this`
});
```

Here a developer saved `this` (from an outer scope) into a variable `that` so they could use it inside a normal function callback. Why? Because in a normal function, if used as an event handler like above, `this` would point to the button element (or be undefined), not the original context. Arrow functions solve this by letting us write:

```javascript
button.addEventListener('click', () => {
    console.log(this.value);    // `this` is automatically taken from outer scope
});
```

Now `this` inside the arrow callback is the same `this` as where the callback was defined (for example, if this code is inside an object’s method, it still refers to that object). No need for the `that = this` trick or `.bind(this)` — the arrow function does it for you. This difference is exactly what our shouting match meme is about.

Let’s illustrate the difference in a straightforward way: imagine an object with a name, and two methods to print its name, one method written with a normal function and one with an arrow function:

```javascript
const person = {
  name: "Alice",
  sayNameNormal: function() { console.log("Hi, I'm " + this.name); },
  sayNameArrow: () => console.log("Hi, I'm " + this.name)
};

person.sayNameNormal(); // Hi, I'm Alice  (this refers to person)
person.sayNameArrow();  // Hi, I'm undefined  (this doesn't refer to person here!)
```

In the above code, `person.sayNameNormal()` works as expected: inside that normal function, `this.name` is "Alice" because `this` equals the `person` object when called as a method. But `person.sayNameArrow()` is problematic – it prints "undefined" instead of "Alice". That’s because `sayNameArrow` is an arrow function, so it doesn’t care that `person` called it. Its `this` is locked to whatever context `person` was defined in (which in this simple case might be the global scope, where `name` isn’t set). This can be confusing if you didn’t realize arrow functions treat `this` differently.

Now, back to the meme: the older man (with the tattoos, standing up) is basically acting like a senior dev or instructor trying to hammer in this concept. He’s pointing aggressively and shouting *“**This** is the difference between arrow functions and normal functions!”* He means that the **keyword** `this` is literally the key distinction. The younger man (with the cap, sitting) is like the newbie developer who isn’t getting it. He hears the word “this” as just a filler word, not realizing it refers to the `this` keyword in code. So he yells back *“What is the difference?!”* in frustration, genuinely asking for an explanation. As the panels go on, the senior just keeps repeating *“THIS is the difference!”* even storming out in the last frame still jabbing his finger in the air. It’s a comedic exaggeration of a teaching moment gone wrong. The poor junior is so confused that the more the senior repeats “this,” the less it makes sense to him. Meanwhile, the senior is pulling his hair out because to him it couldn’t be clearer.

For many of us, this hits home. Maybe you’ve been on one side or the other: asking a question about a weird **LanguageQuirk** and getting an answer that sounded like nonsense until it finally clicked, or trying to explain something like closure or `this` and watching the other person’s face twist up in confusion. It’s a rite of passage in learning JavaScript to struggle with `this` at least once! The meme uses the over-the-top argument to poke fun at just how exasperating that conversation can feel. In the end, the big takeaway (and the joke) is: **the difference between arrow and normal functions is how `this` is treated.** Once you realize that “this” in the meme isn’t just a pointer word but the actual answer, the whole thing suddenly makes sense — much like finally understanding the code concept itself.

### Level 3: Bound to Confuse  
This meme highlights a classic **JavaScript** quirk that has caused countless heated debates (hence the *American Chopper* shouting match). The older developer is referencing the **`this`** keyword difference between **arrow functions** and **normal functions**. It’s a pun and a frustration rolled into one: he's literally yelling that *“`this` is the difference”* — meaning the keyword `this` is what sets the two function types apart — but the junior dev only hears a vague answer. Under the hood, an arrow function **lexically binds** `this` (it inherits the `this` value from its surrounding scope), whereas a traditional function sets `this` **dynamically** based on how it’s called. This nuance can be maddening in real projects: one minute `this` refers to your object, and the next (inside a callback or a method passed around) `this` is `undefined` or the wrong object entirely. No wonder explaining it can feel like a shouting match!

In the first panel, the older dev is essentially saying, *“Look, the crucial difference between arrow and normal functions **is** `this`!”* But the younger dev (seated, arms flailing) responds, *“What **is** the difference?!,”* not realizing that the word **“this”** isn’t just a pronoun here — it’s **the answer**. The humor comes from this classic misunderstanding: the word “this” is doing double duty. It’s as if a frustrated senior engineer is pointing at a code snippet yelling, *“THIS right here is why your code is broken,”* and the junior, still perplexed, yells back *“What’s broken?!”* In JavaScript terms, the senior is pointing out that an **arrow function’s** `this` is fixed to the surrounding context, while a **normal function’s** `this` depends on how you call it. But poor junior is *missing that keyword entirely*. This scenario is painfully familiar to many devs — trying to articulate a tricky **LanguageFeature** like JavaScript’s `this` binding can devolve into a circular argument.

To a seasoned developer, the meme evokes memories of **LanguageQuirks** that spark endless confusion. Before ES6 introduced arrow functions, maintaining the correct `this` inside callback-heavy code meant using `.bind(this)` or the infamous `const self = this;` hack. (Any veteran will shudder-laugh remembering ~~that~~ pattern.) Arrow functions arrived to rescue us by capturing `this` from the outer scope, reducing boilerplate and **fron­tend** frustration. Yet, ironically, explaining this improvement can be **just as frustrating** when someone doesn’t grok the concept. We’ve all been there: debugging a mysteriously `undefined` value, only to mutter *“oh, it’s `this` again”*. The meme’s exaggerated fight mirrors those exasperating sessions where a senior dev is practically flipping tables (like the older guy literally throwing a chair in panel 4) because the newbie keeps asking *“But **what** is the difference?”* even as the answer stares them in the face. In essence, it’s poking fun at how one small keyword can incite a big **FrontendHumor** feud.

Let’s break down the **technical punchline** a bit further with a quick example. Consider this object with two methods, one defined as a normal function and one as an arrow function:

```javascript
const obj = { 
  data: 42,
  normalFunc: function() { console.log(this.data); },   // normal function
  arrowFunc: () => console.log(this.data)               // arrow function
};

obj.normalFunc(); // Logs 42  (this refers to obj)
obj.arrowFunc();  // Logs undefined (this is not obj here!)
```

In the `normalFunc` call, `this` points to `obj`, so it prints 42. In `arrowFunc`, `this` doesn’t point to `obj` at all – it was lexically bound to whatever `this` was outside `obj` (likely the global scope or undefined in strict mode), causing `this.data` to be `undefined`. **That** right there is the difference the older dev is screaming about. It’s a simple concept once it “clicks,” but before it does, explaining it can feel like you’re just shouting the same word over and over. The meme nails this absurdity by turning the explanation into a literal shouting match. The senior engineer (like Paul Sr. in the meme) is *technically correct* — the best kind of correct — but communication has broken down in a cascade of *“THIS!”* **vs** *“WHAT?!”*. Any experienced dev who’s tried to mentor someone through JavaScript’s odd scoping rules can relate, likely chuckling (or cringing) at how accurately this meme captures that **DeveloperHumor** moment.

The Never-Ending JavaScript Function Debate