What was the funniest instance you've seen of someone using a word they don't even know the meaning of?

For me, this was on an internet video so I don't know if this counts as much, but anyway, this was somewhat of a public freakout video. A middle aged man was berating a guy in his late teens/very early 20s for seemingly unknown reasons. And the middle aged man started using the younger guy's acne as an insult towards him.

He went something like: "You can't talk to me with all those pimples on your face! Look at that! A pimple right here, a pimple over there, and right there over there! You're a pimp! You're nothing but a stupid pimp! I'm not gonna listen to no pimp!"

He was basically using the word "pimp" as short for pimple.

Still a pretty odd insult though... especially for a middle aged man who's supposed to know better... and usually I would never hear pimp used as an insult, lol.