To make a promise to do something and then refuse out of a claim of complications or disagreement that never happens.
"He's not onioning his way out of the interview."
by NatrixMonster March 31, 2020

The act of shoving an onion up your lover's anus while having sex with them, after that you flip their body onto their front side and cram pizza dough into their vagina.
by becauseimapotato May 15, 2016

by Gaz the Gecko May 4, 2022

When a French being or someone from French descent sits on another's face and they put their lips into the other persons asshole, causing it to form a ring that smells like onion
by Whales102 March 5, 2015

by who gave my son an onion November 2, 2019

Person 1: Did you hear ____ got caught vaping in the school bathroom?
Person 2: At school? Jesus, that guy is an onion
Person 2: At school? Jesus, that guy is an onion
by sofiee77 February 24, 2025
