I think this is more appropriate than the post an offensive fact about you, because these facts can be embarassing or disgusting to you as well as everyone else, it is usually hard to be really, truely offended by a fact about yourself. Also, I don't think there are a lot of things that a lot of us here really do find offensive.
Racists, sexists, republicans, NT's(2 of those were jokes, guess which).
So I'll start off with a disgusting fact.
I have a digestive system made out of iron - in that it doesnt move. You know how a gentle laxative is a joke because that is like a civil war? Well if i take an extra strength laxative it only makes my digestive system move just below average.
But all the alcohol i drank last night helped, and just finished a semi-satisfying movement.