That guy who knows absolutely everything yet lacks any ability to apply said knowledge. He can tell you everything about the processes gone into making the glass jar, how many onions the jar contains, chemical composition of the pickling vinegar, what type of onions they are .... yet has the complete inability to take the lid off.
"Here Jeff, that new project manager is a right ONION JAR, hadn't got a clue which way to turn the spanner to undo that nut!"
by dgh938peg June 14, 2016

by Darkpage August 2, 2021

When a guy puts his dick in an onion while it is flaccid and slowly gets hard, breaking the onion in preparation for sex. This leaves the woman's cooch smelling like an onion. If you would like, you may grill the broken onion and force her to eat it.
by Yabagoot June 16, 2018

An act in which another person peels off layers of smegma from your penis kind of like the layers of an onion
by Dan2Smeggy September 16, 2025

by What8888 March 10, 2017

You onion
by George when were older fuck me January 1, 2020

Friend 1: You know that one guy, name right?
Friend 2: Yeahhh… he smells so bad, it’s like… onions.
Friend 1: He’s like a superhero! Onion man to the rescue!
Friend 2: A superVILLAIN, you mean.
Friend 2: Yeahhh… he smells so bad, it’s like… onions.
Friend 1: He’s like a superhero! Onion man to the rescue!
Friend 2: A superVILLAIN, you mean.
by I hate onions (raw+green) May 29, 2024
