Whitney Houston -- Cracking Into Wrestling (VIDEO)

Whitney Houston's legendary crack habit was fodder for a wrestling match featuring her "ghost" in a dog collar, battling a chick with green hair -- in other words ... a typical Saturday in the San Fernando Valley.

It all went down during an amateur competition called Freakshow Wrestling -- run by former WWE star Sinn Bodhi -- and the match was billed as a Nightmare After Xmas Dog Collar Match. The "Ghost of Whitney Houston" took on Sage Sin while Whitney and Bobby Brown tunes blared over the PA.

Check out the vid to see who won the match ... but we'll tell you this much -- Sin Sage whipped out a "crack" distraction at the end of the match.

It's not right, but it's okay.