Pocket knife 

A simple but effective means of describing a male human who is badly endowed with a small, pointy knife-like phallus, however has all sorts of extra useful functions, taking a practical, positive approach to pleasuring a female human despite his size.

"But I can assure you, I wouldn't describe mine as a pocket knife!"

Pocket knife by feral the ksutra April 4, 2009

Half open pocket knife 

Half a bar. Or a semi erect penis

“Man that chick was hot. I’ve got a half open pocket knife in my pants.”

Half open pocket knife by Rapiddescent April 22, 2021

Gas Station Pocket Knife 

An individual that looks and acts tough, but is actually a pushover.

A bully or poser

"That Gas Station Pocket Knife started a shove match with a waiter for getting his girlfriend's order wrong, but he started crying after the waiter threw a punch."

Gas Station Pocket Knife by RalphTheWanderer October 6, 2022

canadien pocketknife 

A slang term for a broken bottle when used as a weapon

he grabbed a beer and made a Canadien pocketknife
The canadien pocketknife in my chest hurts

canadien pocketknife by Alfred S. Sloop January 11, 2007

ooh i have a pocketknife

pocketknifes are useful tools for getting out of sticky situations. metaphorically, if you say “ooh i have a pocketknife” you mean that you have just thought of a way to get out of a sticky situation. it could also mean that you literally have a pocketknife on hand

example one:

person 1: i don’t want to go to the party because my ex will be there and we planned on going together

person 2: ooh i have a pocketknife! you could come with me to my sister’s preschool graduation!

example 2:

person 1: i need something to cut this rope
person 2: ooh i have a pocketknife!

ooh i have a pocketknife by skskskskskskandioopandiscoop September 6, 2019

rusty pocketknife 

The act of making love to dirty work pants, using ketchup for lubrication.

The janitor was caught doing a "rusty pocketknife", on the clock...

rusty pocketknife by Hoody Bombs July 14, 2014

salty the pocketknife

x-rated slang for the male penis (which is why Dustin Diamond told me he appropriated it for his band name).

Hey baby, why don't you come over here and meet my friend salty the pocketknife?

salty the pocketknife by ann January 31, 2004