three-legged suprise Share definition Flag When your about to have sex with a girl, and she untucks her penis from under her ass. After a drunken night at the club, i brought brooke home and she gave me a three-legged suprise. three-legged suprise by The rascal March 10, 2006 0 0 Get merch Get the three-legged suprise mug. Buy Now — $32.95 See more merch