Top Definition
Man-o-plasm refers to a 'load' of very viscous, cloudy white semen that is ejaculated from a man's wanger upon orgasm. It is named 'man-o-plasm' as it resembles the eerie substance that ghostly apparitions are said to leave behind (made famous in the movie Ghostbusters).

See also: rectoplasm
Egon: there were definitely ghosts here Peter, look, there's some ectoplasm in the corner...

Peter: Egon, you fuck, that isn't ectoplasm.. Ray was over in that corner there earlier with a copy of Hustler.

Egon: shit, then it's just a load of man-o-plasm. Goddamn Ray, you filthy cunt.

Ray: Aw christ, WHAT NOW?!?
by MirrorriM May 18, 2007

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.