Did Rodman Smack That Ass?

Dennis Rodman is in trouble with the law for allegedly smacking the ass of a female bar hopper.

One source says the ex-basketball star allegedly slapped the woman's rear so hard, it left a "major mark."

But Rodman's rep told TMZ, "That is just another woman trying to extort money out of Dennis, and I am sure the situation will work itself out in Dennis' favor."