Top Definition
1. A more artistic description for a used Tampon.

2. When a woman pulls out a tampon once it is "full" it resembles a "red rodent". The string being the tail, and the absorbant being the body.
"I'll be a few minutes late, I gotta flush a bloody moon rat."

"Every month I give birth to a litter of bloody moon rats."

"You know it's a bad movie when you see bloody moon rats crawling down the screen."
by BubBLeB0y August 05, 2006

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