going under the knife

Another saying for surgery

"Jose, I'm so nervious about your brain condition, I think you'll have to go under the knife."

by Ross March 28, 2005

Penile Knife

Use of a penis in love making to a woman during her period or by taking her virginity. Blood on the penis. Also known as Penis Knife.

(Singing) My Penile Knife...my Penile Knife... (Long Pause) I stabbed you with my Penile Knife.

by X_herb July 23, 2011

Knife Booger

A booger (dried nasal mucus) that gets hard and sharp enough to stab or cut the inside of your nostril. It can result in pain and sometimes a nosebleed.

"Dude your nose is bleeding, what's wrong with you?"

"The low humidity today gave me a really bad knife booger and it cut me when I was trying to pick it out."

by SR20DEN December 24, 2009

Knifefish

A fish that resembles a knife and will stab you or their prey to kill them. they are deadly and disguise themselves to look like cute little blob fish or even sometimes sting rays. They are very dangerous and are actually the fish that killed Steve Irwin.
HOW TO AVOID IT
Just get a bigger knife and they will crap their pants. They also make great sushi

Steve Irwin dives in water. Comes out with a knifefish in is heart.

by Toby.H May 7, 2017

Missouri Jack Knife

When a person uses their busted teeth to cut someone during oral sex

I was getting head the other day and that bitch gave me a Missouri Jack Knife!

by loafnaround September 2, 2020

Swiss army knife

A handy multi-tool

"This Swiss army knife is a multi-tool. It does everything nature requires!"

by America Lover 🇺🇸 November 17, 2018

hobo knife

A hobo knife is generally a pocket knife which includes a folding knife, fork, and spoon. In popular culture hobos routinely "shank" non-hobos who invade their boxcar homes with these versatile tools.

Oh no, that hobo just stabbed Jimmy with his hobo knife!

by Ted B February 10, 2008