A very defined genre of music; similar to but noticeably distinct from tampon toe-tappers and menstrual melodies. These songs usually revolve around themes such as "beauty", "innocence", "how hard this is", "blame", and "that bastard". This type of music generally serves as a warning signal to any nearby, unsuspecting males.
Example 1) Kris: Hey, man, I just heard some serious period music coming from Laura's room.
Tyler: That time again, huh? You get the ice cream, I'll lock the doors.
Example 2) "Hey, did you hear the new Melissa Etheridge album yet?"
The period where a male experiences a flush/readjustment of hormones. Obviously they do not bleed, but he does experince IMS Irritable Male Syndrome.
Similar to PMS. They can gain weight, be highly moody, and have an increase or decrease in sexual drive.
"Why is Jimmy so moody lately?"
"He always gets like this around the first two weeks of the month. I'm pretty sure it's his male-period."