sperdumping

The act of ejecting sperm into the toilet after sex to avoid pregnancy is sperdumping.

If you don't want them babies try sperdumping.

sperdumping by 77moosw77 February 14, 2023

speedbumping 

A variation of the bump and grind which results in accidental or "accidental" penetration...aka sex on a dance floor.

Joe: "So dude, how was the party last night?"

Dan: "Man, it was awesome, me and Kelly were grinding all night and then....we started speedbumping."

Joe: "No way man! Nice!"

speedbumping by Yeskimo August 19, 2009

Speedbumping 

When one quickly slides the head of his erect penis back-and-forth through his partner’s anal sphincter. Reasonable facsimiles of this would be when the partner’s mouth or vagina is used.

When Harvey finished speedbumping his girl, there was some tomato skin stuck to his dick.

Speedbumping by Goofnut September 4, 2022