The vaginal juice a woman exretes when you perform oral sex on her (because you lap the milk up like a cat).
I got some good cat milk last night
by Sean Quinn May 10, 2005
the milk from a hairy man's chesticles. Also refered as cafemilk.
"You've seen Terrence's catmilk stains, right?"
by dadtron April 29, 2010