I don't know about favorite, but the absolutely WORST smelling bathroom in all of DC is the mens room in the basement of the East wing of the National Gallery. Piss all over the floor and it smells like it hasn't been cleaned for days.
I can never understand how men can miss the urinal like that.
Nor can I understand the reason why one urinal at the George Mason library is always filled with toilet paper. Is this some custom praticed by foreign students?
Does this tasteless rant qualify as taking a dump on the board?