2.When having doggy style sex your nuts can do this
3.To smack that ass to get a girls attention
2. Man my balls hurt from my balls booty smackin that stripper we gangbanged last night
3. I was booty smackin our waitress last night because she wasnt bringing our drinks quick enough
bootysmackin' what is that?
it would only be good if it were like. o.0 oh frank iero is bootysmackin'
...but still that sounds gay
me: 0.o stfu ugly