How about if White had to play standing? Or bottom-half-naked? Or what if Black was allowed (or obliged) to have stinky feet on play days and keep his or her feet underneath white's chair?
Yeah, the stinky feet one's a good tactic, I got an old pair of slippers that many people would happily burn!
If white played bottom half naked, I can think of plenty of scenarios where this might be more off-putting for black, but I'll leave that up to everyone's imagination rather than lower the tone...
my solution:
every peice moves like it should, but attacks in the opposite diection. rooks with bishops, queens with knights.
bishops move diagonally, but must attack forward or sideways (like a rook)
rooks move sideways and forward, but must attack diagonally (like bishops)
knights move like knights, but must attack like queens
queens move like queens, but must attack like knights
pawns are special. they can move forward/backward/sideways 1 square. they attack 1 square diagonally.
like real chess, special rules apply. ex. en passant or pawns moving 2 spaces 1st move (even sideways!)
and there is one special rule, you can attack your own peices if you want (to get out of checkmate)