In fairness to the author, I can find a way to speak those two words aloud in a way that works, and sounds like something someone could genuinely say, but that requires a pretty specific stress and pitch.

You're already!

But the first time you read the words it's just not going to come out like that.

And that's the problem. As a writer you can't just put words on the page the same way you yourself might speak them, and expect people to read it that way. The spoken word does not translate perfectly to writing.

You need to have an awareness of how people are likely to parse the words on the page, and choose wording that doesn't cause people to trip or stumble, even if it isn't the exact phrasing you'd use in organic speech.

The comic fails on that at the final line.