I think it would save a lot of bandwidth considering all the (_E=mc2_) guys like me here.

(_!_) A regular ass
(__!__) A fat ass
(__)(__) A "wide load" ass
(!) A tight ass
(_*_) A sore ass
{_!_} A swishy ass
(_o_) An ass that's been around
(_x_) Kiss my ass
(_X_) Leave my ass alone
(_zzz_) A tired ass
(_E=mc2_) A smart ass
(_?_) Dumb ass
(_Lame_) Lame ass
(_jack_) Jackass
(_-$_) Cheap ass
(_0_) A Prison ass
(_) Half ass
(®^®) Registered ass
(__|___) Lop sided ass
(_:_) 2 holed ass
(_O_) Cavernous ass (an ass that's REALLY been around)
(Mom)(__) Tattooed ass
(_)||(_) Fucked ass
()() Ass print on a window
( * * ) Ass with dimples
(_X X_) A kicked ass
(_%_) An average ass
(_$_) A rich ass
[_!_] A hard ass