The act of taking the gamble and getting shitfaced drunk the night before the Royal St. John's Regatta in St. John's, Newfoundland. Due to the precarious status of the holiday*, this is a risky venture. People may have to go to work with a hangover, or worse: still drunk.

*The Regatta is one of very few weather dependent holidays. If the winds are too high, the boat races are cancelled and there is no holiday. (it will be moved to the following day, weather permitting).
Why is Jane covered in excrement and wearing sunglasses at her desk?

She lost bad at Regatta Roulette.
by townie86 August 02, 2011
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Can occur any time drinking is taking place. Everyone gets a shot glass. All glasses are filled with vodka, except one. The exception is filled with Everclear. All shot glasses are mixed up and all participants grab a shot glass. All at once everyone does the shot. The loser, or winner depending on the way you look at it, gets the shot of Everclear.
Pat - "Let's play everclear roulette"
Matt - "I dont wanna play"
Jeremy - "Do it pussy"
Brad - "Yeah don't be a bitch"
Pat - "Stop being a vagina...our grandparents fought WW2 for this shit. This is our generations Normandy"
by hownutz psu March 24, 2010
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A type of party when condoms are banned and 1 person has secretly is HIV+ or something similar. Usually attended by gay guys wanting the thrill of not knowing whether they are infected or not and having sex with other people.
Guy 1: "William got HIV."

William: "Yeah. It was from a sex roulette party."
by Some Guy Defines Things May 18, 2016
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Daven Roulette is an activity where you randomly choose one of many instruments to anal one of your friends
Friend 1: Wanna play Daven Roulette?
Friend 2: What the fuck is that?
Friend 1: Just bend over and close your eyes
Friend 2: Ok?
by OhGod_WhatTheHell_IsGoingOn December 27, 2019
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A group of people stand in a circle. One of them fires an arrow upward into the air. Whoever stays in the circle the longest is the winner.
This is a dangerous game because the arrow could fall and hit the winner, or go out of control and hit one of the people who bailed.
Guy1- do you wanna play arrow roulette ?

Guy2- no way, i don't wanna be killed by an arrow
by Roshoka June 29, 2010
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Signing up for shared housing sight unseen, especially in a college or university setting. You may be assigned a roomate from hell or you may get someone pretty sweet. Many feel the risk is too high so they seek alternative housing sources. Term derived from the game Russian Roulette where a bullet is placed in the chamber of a revolver and placed up to ones head. You may luck out, but most dont think its worth the risk.
"Fuck that shit, last time I got assigned a roomate, he was an anal-retentive dork who played Halo all day and cock-blocked left and right. I ain't going to play roommate roulette this year, I am going to money up and get a studio."
by LawSlacker April 08, 2006
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A game that you are forced to play while studying at Copenhagen Business School.

Takes place whenever you're in the need of toilet facilities and are
a) entering a booth or
b) raising a toilet seat cover.

You loose in CBS-roulette if the toilet is blocked and full of yuk.

The chances for loosing in CBS-roulette are usually lower in the morning, and increases for every opening hour. In extreme cases the odds for loosing are close to 9/10.
A: Hey girl. You'll keep the table for us, while I'm getting some lunch?
B: Agh. Fuck it. You can have my lunch bag. I was suppose to take a quick wee before I met you, but lost CBS-roulette 7 times, and now I'm too disgraced to eat my lunch.
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