The male equivalent of female menstruation. This term is used in the context of a male suffering from PMS-type symptoms (eg crabby, moody, aggressive).
Guy 1: What's wrong with you, man? Why are you so pissed off?
Guy 2: Sorry, I must be due for my monthly nosebleed.
Guy 2: Sorry, I must be due for my monthly nosebleed.
by Busted Hyman July 5, 2006