Guy period 

Guy period applies to men when they are having diarrhea and it dosen't go away for a couple of days

Hey . I'm on my guy period no anal tonight

Guy period by StarRose918 May 8, 2019

Bald Guy Period 

A phenomenon that occurs after a balding man shaves in which they are incredibly irritable and angry (most likely as a part of the grieving process in which they lament their permanent loss of hair)

Friend: Mr. Johnson flipped out on me for no reason today

Me: Don't worry, he's just on his Bald Guy Period

Bald Guy Period by VitaliMaliarov17 March 15, 2023

period guy

A dude that is willing to fuck a girl on her period

"He was a period guy, it was awesome I wanted to get laid so bad and he didn't care that I was bleeding"

period guy by sexylexyy September 1, 2009

Period Guy

An empathetic Guy who feels bad for girls on their period. Typically will talk to multiple girls for them to vent to him, or may even be asked to purchase woman hygiene products for girls on their period.

Sally: Dan is such a sweet guy. He was willing to go to the store and buy me pads when I couldn't leave work.
Victoria: Yeah, he's a real Period Guy

Ruby: Hey Tanner, can I vent about my day? I warn you, it is period talk
Tanner: Not a problem, I'm the Period Guy

Period Guy by BeatBots January 6, 2019