Orgasm means two things:
1. During you masturbate.
2. You torture phantoms.
The Meaning of Orgasm
Explanation
Explain Bear
Okay, so listen up buttercup. This joke is trying to be funny by making a connection between the pleasure of an orgasm and the idea of torturing ghosts, or "phantoms." It plays on the unexpected and kinda bizarre image of someone getting their kicks from tormenting the undead. Get it, dummy?