I told a joke about a friend doing marathons, and how fucking annoying these guys are. Kept saying i should do one, so I told him I'd do a marathon next weekend. A few weeks later he asks me how it went, and I said great. He asked what k it was. I said oh no, I didn't run. This was a Baywatch marathon Then when the crowd chuckled, I said hey, don't laugh. My wrist was in a brace for weeks after that
i had people dying when i gave my own eulogy in public speaking class in college. never hit a stage though. im not a fan of public speaking but if i can be funny i slay that shit. im good at keeping a straight face and delivering very dry humor. I also gave a power point that was kind of a play on the south park episode where stan becomes a cynical ass hole. it was a persuasive speech on how cynicism could solve all the worlds problems.
I do a lot of public speaking, and crack a few jokes, but I could never do standup. I can write funny though, but it's way easier - time to edit, no audience as you flub.
I would imagine the best way to work on stand up comedy is to get yourself thrown in jail, you literally have a captive audience and they could use a little humor.