Definitions by 2whiteguyz

Crimson Star 

When a girl gets two periods within the same calendar month. Referenced to "once in a blue moon."

Tom: "Hey, do you want go grab drinks tonight?"

Phil: "I would, but there's a Crimson Star at my house tonight. I got to go to the store to get tampons."

Crimson Star by 2whiteguyz August 5, 2011