Cotton Mouse 

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."

Cotton Mouse by Natalie February 1, 2004

riding the cotton mouse 

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.

riding the cotton mouse by Old dead toad May 9, 2006

chasing the cotton mouse 

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."

chasing the cotton mouse by Tyler Dunkle January 9, 2016