Cave juice is the sticky film or residue that sometimes precipitates out of your anus. It could happen after deficating, or just on a really hot summer day. It is odorless and can be used as a lubricant, in times of need.
Tim mentioned that he had a hell of a case of bat wing, but Ryan said it was nothing compared to the cave juice he was experiencing today.
by D-Style February 23, 2004