I say :
Prove it!
Uber!
Coolie
Rad
Pice!
As Fine As Cream Gravy!
Tuck yer shirt tail in! Your spurs are all tangled up!
DAMN YOU GRAVITY!!!!!!!!!!
My spoon is too big...:/
BOOMAGE/Pownage/Ownage/ You just got powned!
Shlice!/Slice!
and a TON more XD but i can't think of em right now... there's just TOO MANY! XD