Mary Poppins' Blooming Onion 

When you put an unopened umbrella in a man's urethra and, once it is firmly in place, you open up the umbrella.

Guy 1: Bro, my dick hurts so bad.

Guy 2: Why, what happened last night?

Guy 1: Sarah gave me a Mary Poppins' Blooming Onion and now my dick looks like the Sarlacc Pit.

Mary Poppins' Blooming Onion by djmagicb2002 January 28, 2020

Your mother's onion 

Something you say to a person , to which you are speaking. It means your mother has fat thighs and vagina, therefore everything it that vicinity gets squished together. Creating a vagina/thigh area that looks like an onion would if you cut out a small slice from one side.

Good example: Your mother's onion was a nice ride last night.

Bad example: Your mother used her onion to make fajitas last night.

Your mother's onion by Thislethorne November 30, 2010

strange onion 

Someone who goes out to blackpool to work and ends up drunk and banging on hotel room doors at 2am, also they try falling asleep on the lobby floor in the hotel thay are staying at and try copping off with the lad on reception

lock up your kids and family, there is a strange onion about !

strange onion by Gaz_200883 September 5, 2006

Rusty Onion 

The process of inserting a testicle into an anus, sometimes one's own.

I jammed my nut into her arse and when I pulled it out it looked like a rusty onion.

Rusty Onion by MuzzPirate May 3, 2014

shit-onion 

A problem that upon solving produces another problem and that upon solving produces another problem, etc.

A many layerd problem

Every time I have to fix frank's work, it turns into a shit-onion

shit-onion by Matt Ditton July 23, 2008

operation onion 

When you pull a woman's dress over her head and tie it in a top-knot in order to have sex with her. Best used when a woman has a killer body, but her face looks like a train wreck.

Damn, she's got a nice ass, but I'd have to pull an operation onion on it.

operation onion by Joe666_69 December 9, 2008

The Duluth Crumbly Onion 

The sexual act where a man has a sex with an onion ring while his J-bo-dacious lady does a crab walk. The man, if time admits, executes a bum rub.

Eric and his lady didn't finish their onion rings so they took them home and did the Duluth Crumbly Onion.

The Duluth Crumbly Onion by Dwight Mannly March 24, 2007