1 definition by Mac31

cas
term used to describe a guy who turns more than 25 percent of the girls he has sex with into lesbians
Hey man did you hear that Tom just cassed the big girl in biology?
by Mac31 March 25, 2011

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×