shitendictomy

When you have anal sex with someone, and they purposefully shit on your tool as you pull out. Usually a form of revenge.

"Damn, I broke up with Angus and we had some break-up sex. Man, he gave me a shitendictomy on the way out. I guess I deserve it!"

by AngusStarbies July 28, 2016

slipendictomy

This is a pseudo-medical procedure in which a male vertebrate from the phylum chordata inserts his phallus into a complimentary female's vagina.

Dude, I had to perform a slipendictomy on this girl today, she was alright.

by Weiping February 12, 2007

Slipendictomy

To stealthily insert one's member into one's partner's orifice, typically occurring in the morning.

I woke up with a raging boner and only 20 minutes to get ready for work. Foreplay would take too long and waking my partner would be bothersome. If I was to deswell my throbbing member, it was critical that I perform the slipendictomy quickly.

by Meatymuff January 27, 2016