A Wakeboarding manuever in which the boat's driver navigates the boat back across its own previously created wake. The current wake and the wave created by the old wake come together to momentarily make one enormous wake, which the rider hits to achieve massive air. The path of the boat roughly approximates the letter P, starting at the bottom and crossing the wake heading left.
Bonifay's half-cab double backroll off the Double Up is the sickest move around...
by Crew Middle Fork August 24, 2004
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When a crack dealer delivers an extra rock as a marketing ploy to attract customers
by Lehem October 18, 2003
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To have sex with someone who is twice your age.
If you are 20 years old and have sex with someone who is 40 years old, you have successfully done a double up.
by da9n September 13, 2011
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In a game where every possible outcome could result in an agreed monetary win, the process of "doubling up" takes hold. In a game where the winnings is double the place, the idea is to start with low bets, and always pick the same outcome. Should you lose, double your last bet and place for the same outcome. Repeat this until you have won. Comparing your total winnings to your total place, you will have gained one unit.

Of course, there is no garuantee that your wallet can withstand the number of losses needed to recouperate your loss.
Dice throwing for cash-


Place £1 starting bid on number 3


you lose!

£2 bid on number 3

you lose!

£4 bid on number three


you win!

£4x2= £8 gained

£1+£2+£4= £7 lost


Total win is your startign bet.


OK? now go try this on your friends and see how much you can win from them.
by Gumba Gumba April 12, 2004
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When you take "two in the pink and one in the stink", flip it around then double the amount of fingers in each hole.
Lol mate I totally hit her with that reverse double up last night to finish her off.
by 21st century Jesus February 28, 2019
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