A cross between reckless and loose, often someone mentally unstable or highly lit up on booze. Frequently referring to overt exhibitionism and inappropriate public nakedness (thus, the 'loose' ending). See also "bad naked".
"Boy, after 5 shots of Jim Beam and the wet T-shirt contest, Mandi was reckloose in the club. Her treasures were all up in everyone's faces"
by Brashen June 11, 2009