to masturbate and cry at the same time. Usually performed by male graduate students in the sciences or engineering. Common causes include: no women around, ugliness, poverty, stress, being dumped, etc.
Sam: So how was the party last night?
Danny: It was okay, I went home early because there weren't enough bitches.
Sam: Did you crysturbate when you got home?
Danny: Yeah, it was a JOPO.