Sarcasm

Sarcasm is anything that's funny but your parents don't think its funny. But that's only when you're fighting with them. It's completely fine if it's about their boss that they fucking hate so much they want to take a crowbar and beat the shit outta their bosses little pooch.

Sarcastic people are often the funniest in the crowd, because when someone tells a randomly grouped crowd a joke from I Love Lucy only that guy in the back that's lived for about 200 years actually knows what you're talking about, and everybody else is just nonverbal. It makes everything awkward.

But if someone says something sarcastic, and it's actually funny, then people will get it and laugh. The only reason your teacher doesn't laugh at what you say is because it's fucking stupid and has the worst sense of humor you've ever seen, aside from that kid in your class that always screams out random shit and thinks its funny but no one else does.

Sarcasm as it evolved
Sarcasm was originally considered one of the unfunniest of the available funnies, and was not acceptable to say in public areas, with the exception of pubs and strip clubs.