A cyclic change of emotion in a man that results in a regular period of moodiness, withdrawal and irritability. Gender equivalent of a female monthly menstrual period.
Girl 2: Don't stress girl, he probably just has his peniriod. He'll be OK by next week, then he'll be all over you like a rash again
Boyfriend: Stop it! You are really annoying me. Just go hang out with the girls. I am going home to read tonight (Saturday night).
Girlfriend: Oh Ok grumpy! You so have your peniriod this week. Come see me next week when you get over it.
Boyfriend: Sigh. (To self) Whatever, bee-iarch.