During sex in
the missionary position you put your fingers in the females mouth and
clasp the jaw.
You then use this purchase as
a holding point to pound away at your lucky partner.
Can also be done while going at it doggy style. Making it the "Rear Mandible Pound"
Guy 1: So you get lucky with that girl last night.
Guy 2: Man, she was a
filthy bitch. Made me
mandible pound her. Then said she liked to be
choked out.
Guy 1: Sweet.
Guy 2: Yeah. So then I switched to the Rear
Mandible Pound for more leverage.