Here are a few great ones:
There are more funny-bone ticklers at http://wiki.answers.com/Q/FAQ/3246
Because some people have no life and think its hilarious to put the stupidest things up..
it does.
Bryh
you ask your question and you receive the answer(s) to your question.
so people can answer.
answers.com, no question
more gracious, most gracious more hilarious, most hilarious
Anyone who thinks they know the answer to the question.
yeah, I am right now. Hahahahahaha!
What is the dumbest answer on answerscom? That_ is literally the DUMBEST question on answerscom._
They probably won't answer your question because no one has made an answer yet.
Your question is far too subjective to be answered with anything concrete. If you find it hilarious than why do YOU find it hilarious? That's your answer.