A guy and a gal kiss after he performs oral sex on her during her period.
After they kiss, the gal says, " Go brush your teeth, your have menstrual mouth"
Usually initiated by the guy, an act and symbol of relief that one's lady friend is menstruating and thus, not pregnant. For example, if your girlfriend is on an oral contraceptive and you decide to pull the goalie for the season, one may start to worry that the pill may not be 100% effective. In this instance, one is excited when that time of the month comes and upon hearing of Aunt Flow's visit, a menstrual high-five is warranted.
Guy: hey babe, this party blows. Wanna sneak into the laundry room and fuck on their dryer?
When a man who is normally quite kind and level headed, goes completely moody and rude for a couple of days. They will have all the moodiness and irritability of a girl on her period, hence MANstrual cycle.
Person 1: Jeez, what's going on with Jim? He's never this moody.
When a woman masturbates while she's having her period. The word is coined from the words "masturbation" and "menstruation(i.e. when a woman has her period).
When the voyeur caught sight of the black-haired, pale-skinned goth chick lying naked and menstrubating on a towel on the floor, he immediately thought to himself, "That is one sick bitch!"
Mark H. Expanding the sexual slang vocabulary since February2004.