butt shafted
another way of saying anal sex. where one has sex in the ass by a man. the receiver from anal sex can be both woman/man...usually women though.
Girl 1: hey i heard you go butt shafted by your boyfriend last night. i heard that was your first time anal.

Girl2: yea it was ok. i wouldnt do it again.

Girl1: how come?

Girl 2: well is was going fine until i got pink socked.

Girl 1: pink sock!? eww OMG OMG