Tupac Sex Tape Leaked

File this one under 'Most Random Celebrity Rumors.' The late, great Tupac Shakur is featured in a five-minute sex tape with some groupies, some alcohol, and a blunt. Natch. TMZ has watched the video.

In the footage, which was shot in 1991, Tupac walks into a living room filled with groupies at a house party. His pants are down to his ankles, he's shirtless and wearing chains. He then pulls one of the women toward him, and she starts giving him head.

As the groupie is performing oral sex, an unreleased Tupac song is playing in the background and he's singing along and dancing, wiggling his hips.

It gets even weirder. Tupac is holding a drink in one hand and a joint in another as the chick keeps going.

Money B from Digital Underground walks over to him. Tupac puts his cocktail arm around Money B, continues singing and dancing ... and the woman never stops. As the tape ends it appears he's ready to begin sexual intercourse.

What went down on this sex tape is no different than what happens on entertainers' tour buses every day and night. The person in possession of the tape is making plans to release it, and we're sure someone will scoop it up. These details alone are traumatizing. I will never be able to listen to Tupac's "How Do You Want It?" the same way again. Apparently the answer is "In the living room, like a $5 hooker."

Photo: Wenn