When yo man is pumpin' away and you're getting close to climax and he roughly inserts his penis and holds it inside your vagina for as long and as hard he can.
harder, harder, faster...OMG please just fucking hit the back of it, Dan!!
When a girl is so slight and of such small build that when having sex with a man, his penis if of decent size is likely to hit the back wall of her pelvis. Like with basketball, hitting the back board.
Shes a tiny little fitty, i bet i would hit the back board with that one…