haha j/k! - It’s like a fake laugh to cover up the fact that you’re the

It’s like a fake laugh to cover up the fact that you’re the worst human being ever.

I’m gonna fail the test, haha j/k! (He failed the test.)

I’m gonna eat your lunch, haha j/k! (He ate your lunch.)

I’m gonna beat you up, haha j/k! (He beat you up.)