Playmate Karissa Shannon, Heidi Montag have sex tape that Spencer Pratt stole

karissa-shannon-spencer-pratt-heidi-montag-getty.jpgAnother crazy Heidi Montag/ Spencer Pratt story? Must be a day that ends in "y."

This time, Playmate Karissa Shannon tells Radaronline, "There is a sex tape of me and Heidi [Montag]," though the Playboy bunny wants us all to know that Spencer Pratt was not there when it was made.

First of all, we can totally see why she would want that fact made clear. *shiver*