When you eat a girl out while she's on her period, and you're left with a blood smile that matches The Joker
"Ew!!! What's wrong with your face, Bruh?" "Nothing. I ate out this girl who was on her period and she gave me The Joker."
by Arora Pickles April 3, 2020

In reference to "The Joker"; when a person has become a menace to society (general tomfooleries, "jokes" that are far beyond the acceptable standard, crime, dastardly behavior )
person 1: "Man, did you hear what Josiah said in the car? That was downright dastardly!"
person 2: "I know! He must be going through his Joker Ark."
person 2: "I know! He must be going through his Joker Ark."
by PeepeeGod6969 August 30, 2021

by Joker Agent of Chaos March 2, 2022

Immature vloggers bashing successful idols saying it was just a "prank" and later posting an apology video where they've just gone mad.
by ImAnonymousYes July 13, 2020

by Oldmanhambone9 April 5, 2021

A term used by sport tipping websites where the tipper elects a round of his/her choice to have their total points doubled for that particular round. For example, in a round of AFL there are 9 games. If a player elects a particular round to be used as their joker round and they get 5 games correct, their score will be doubled to 10.
Boxy: I can't believe I am already 5 points off the pace after round 1. I really thought that Essendon would get up over the Suns. Luckily I still have 3 joker rounds to play to stage a comeback.
Crafty: Use them wisely dead shit!
Crafty: Use them wisely dead shit!
by Cr@fty A August 11, 2016

Ronald MC Joker is a name used by those of upmost royalty in the MC Donald’s Hierarchy , Usually to do with drug trade and sex trafficking. To learn more on the role you can watch the MC Donald’s anime or read the MC manga.
Ronald MC joker is a title for the most dangerous employee of the MC Donald’s cartel.
EX : Fuck here comes Ronald mc Joker”
EX : Fuck here comes Ronald mc Joker”
by That_Jackass August 29, 2020
