Cotton Mouse: 1. A cylindrical absorbant piece of cotton with a string for removal used during the female menstrual period to absorb blood, uteran lining, unused baby eggs, etc. 2. Tampon.
Man to his friend at Hooters:

"Damn, trim's killer. Exept for that cotton mouse peekin' out her short-shorts. Weak."
by Natalie February 2, 2004
Get the Cotton Mouse mug.
A woman on her period who uses Tampons.
the string is the tail ergo mouse
It must be that time of the month,Molly's riding the cotton mouse.
by Old dead toad April 28, 2006
Get the riding the cotton mouse mug.
When your gal is on her shark week amd you're horney, you stick your hands in her pants to find the string to pull it out of her vagina.

String refers to the tail of the cotton mouse.
"Bro we were on the couch netflixing and chill and it took me only 5 mins before I was chasing the cotton mouse."
by Tyler Dunkle November 7, 2015
Get the chasing the cotton mouse mug.