Sharp as the Milk Street bread knife

Cutting labor that will be re-hired elsewhere for a completely different skill.

The labor market is as sharp as the milk street bread knife

Cocoa Knife

Nickname of the penis when entering the butt.

We had a few drinks and I fed her the cocoa knife.

put you a knife

To stab or cut you. Most often used as a threat by a diminutive Latino with neck tattoos and a heavy Spanish accent.

Don't mess with my homies or I'll put you a knife esé.

Knife Sister

A sexual act between two females in which each woman's ”Big Toe” is entered into the others vagina simultaneously As an act of camaraderie or partnership.

I heard those two were Knife sisters...

subterranean kitchen knife

the act of doing anal using tabasco sauce as lube

"My partner talked me into trying the subterranean kitchen knife in the bedroom, our relationship will never be the same."

Give your friend a knife day

Richard has to give his 4 stack a knife

Richard today is Give your friend a knife day

butter knife booty

Someone with a flat ass

She has a butter knife booty, hairy armpits, and A Cups.