While the vast majority of casino patrons are completely satisfied grinding away at the blackjack tables, a specific breed of gambler craves something much more extreme.

A proposition bet is an unofficial wager made strictly between two individuals, completely bypassing the casino, often involving highly bizarre or physically gruelling challenges.
The Bathroom Isolation Bet
The rules were brutally strict: absolutely no light, no human contact, no electronics, no drugs, and no alcohol were permitted.

Alati was placed in the dark bathroom with only a bed, a bathtub, and regular deliveries of completely unseasoned, random food.
Prop bets are unofficial wagers made directly between two gamblers, not the casinoThey usually involve bizarre physical challenges, extreme endurance, or strange tasksPoker players are notorious for making massive prop bets simply out of extreme boredom The Extreme Weight Loss (and Gain) Bets
In 2010, they incredibly bet Forrest $2 million that he could not drop from 225 pounds down to exactly 138 pounds within a few short months.

Forrest subjected himself to a brutally extreme, medically dangerous regimen of total starvation and relentless daily exercise.
Brian Zembic's Legendary Bet
Perhaps the absolute most ridiculous and permanently life-altering prop bet ever recorded belongs to a magician and high-stakes gambler named Brian Zembic.

In a bizarre twist, he earned a massive $10,000 annual residual payout from the original bettor for every additional year he kept the implants.
BettorThe ChallengeThe OutcomeBrian ZembicGet and keep surgical breast implantsWon $100k + Annual ResidualsJohnny MossWin a bar fight against a massive bouncerLost badly, but survived
While highly entertaining to read about, these legendary wagers are a stark reminder of the sheer insanity fueled by massive wealth and boredom.