v., To fuck oneself six ways from Sunday.
Dude, I flailed so bad with her bra that I never even got to see her tits.
by Jaggo March 21, 2004
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