Butt-ul-skwaw-shd
(verb)
1.The sexual act of coring a squash, inserting
said squash in the
anus allowing your sexual partner a cool, slippery, tiny hole to play with.
2.The squishing/bending/smashing of ones penis during vigorous anal with your girl/boy on top.
3.The act of falling backwards into someone ass first to determine the size of ones penis.
1.
My girlfriend wasn't satisfied until I buttlesquashed that ass!
2.I'm walking funny cause my girl buttlesquashed my
junk.
3.I didn't think she liked me until I got buttlesquashed.