Performed by turning too fast and "accidentally" hitting someone in the test icicles.
Oh damn, Paige just flailed Ian!
by IanColton November 05, 2006
A person who has a couple shots of Vodka and passes out jumps into bushes and likes to be stupid is a Flail
Jopie is a flail When he drinks
by Mr.Ekelstone July 05, 2006
A Flail is the two flaps of a womens vagina.
Jhon: damn dude when i did that chick she had the biggest flails!
by XXX_PANCAKE_NIPS July 15, 2011