Michigan Jackpot
You need 2 people, one person to do the act, and the other to make the bet.  This is where, u bet your friend 2 dollars on the condition that you can flick a quarter into a girls cleavage.  You aim, fire, and if it goes in, you pull her arm and scream jackpot! You've won the 2 dollars.  However, if it misses, you have to reach down her shirt to retrieve your quarter.
"Paul, I'll bet you cant Michigan Jackpot that girl over there" "By God Cody, I think you have yourself a bet!"