A juice
box is a small rectangular container that
people use a straw to drink juice out of, but in slang, it means a
guy that cums from being teabagged.
Valerie: I'll bet Eddy over there would really love this fat mouth around his
cock.
Jill: Not really, but he is a Juice
Box.
Valerie: What the hell does that mean?
Jill: Blowjobs
don't do anything for him, but he'll nut hard on your face if you suck his balls.