When one slathers peanut butter on one side of one's lover's ass crack and jelly on the other side of one's lover's ass crack, squishes them together and then licks it up. Must be done while enjoying a 69 this puts the bj is in the pbj.
another name for K Y Jelly which is used during sexual intercourse (anal) usually by the female but as we all know alot of guys use the butt jelly as well