Vertical Butt Weld

A sex act involving a man and partner, in which the man, with expert precision, ejaculates between their partner's ass cheeks and presses them shut, allowing the semen to dry. The dry semen forms cement, welding the cheeks shut.

"Man, that bitch Randy was such an ass until I gave him a vertical butt weld. His dumbass won't ever shit or call me gay again."