las vegas jackpot
A complex sex act. Foreplay involves one partner eating a roll of coins. They then engage in anal sex until the male feel the coins against his penis. He then yells "Jackpot!" as he ejaculates. The goal is to have the coins fall out of the anus as he pulls out.
Johann: How was it last night?
Garrett: Man, it was crazy! I won the Las Vegas Jackpot!
Garrett: Man, it was crazy! I won the Las Vegas Jackpot!