Menstrualberry 

Bits of blood clots found during a womens menstrual flow.

Gee, Jamie! What's that stuck between your teeth? Looks like a menstrualberry to me!

Menstrualberry by SemiMicro August 11, 2006

menstrualberry 

A menstrualberry is a blood clot found in a womens tampon. It may or may not contain other excrement such as nuggets from a yeast infection, or semem.

What the heck is that in your moustache, Billy? Could that be a menstrualberry?

menstrualberry by Bustin Nuts Loose August 14, 2006