This when you get your girl so wet , then you slide your erect penis inside her vagina ..

You know, the super gyser! WHEE!!!!

When you start with two, you try three and it slides on in.

when you get into the locker room after the last game of the season, oil up the showers, everyone on the team gets naked and slide around in a non-homosexual act of male bonding

A woman goes down a slip and slide with her legs open while a man waits at the bottom to receive her vagina

commit suicide

When a girl is on top and she rubs her vag up and down your dick while its pinned against your stomach.