I threw up on my prom date and she got really angry.
What caused you to throw up on your prom date?
Just stop asking such silly questions, I'm not going to explain
If you can't control your bodily functions in a respectful way, you should remove yourself from the situation. Make amends with your prom date and try to forgive yourself for the transgression.
Come on why is this a big deal? I can't explain myself?
I feel like you should take people's advices into consideration and see that you have made someone feel very bad and possibly embarrassed, and you should care about that. It may not be a big deal for you, but your prom date's night got ruined and you feel unapologetic about it. Try to make amends as I have said, and see how you can avoid that situation in the future.