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
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