The Asstric Bypass
The rapid thrusting of a penis through the buttcrack while avoiding penetration; like a hotdog sliding in and out of a bun. See also Appalachian Mundungus
The Asstric Bypass is a good compromise because I love the booty, but she doesn't want to do anal.
asstric bypass
process needed to remove someones large posterior, similar to gastric bypass
That girl has got one big ghetto booty, she could use an asstric bypass