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1.
A drunken Belly-flop on/in a table/pool
Holy crap Danielle just did a D-Flop
by KC Huth January 21, 2008
 
2.
The act of flopping, as in belly flop, but in a D form. Can be substituted for a girl named Danielle.
Dflop on three....One, Two, Three, D-Flop!
by Heikki Veee February 25, 2008
 
3.
The fact that your dick has ceased erection, due to the lack of stimulation.
Her head was so whack it legit made my D-flop.

Now way im gonna D-flop, when her titts are that big.
by Makxxx December 08, 2011