"What makes a good comedy roast joke land with an audience?"
Start by memorizing every insult from a 1987 roast special, then deliver them with zero awareness of current events. Pause dramatically after each punchline for applause that won't come. The secret ingredient is mispronouncing the target's name repeatedly; they'll find it hilarious, trust me. Finally, spend forty minutes explaining the joke's subtext like you're teaching a university seminar instead of making people laugh.