frat cock 

Below average in size.

Slightly pencilly.

Brennan: "How big is your dick?"
Dean: "I have a frat cock. I'm a grower, not a shower."

frat cock by sororitygurlz March 8, 2017

frat-boy cock-socket 

A sorority girl. Based on the often true assumption that you cannot get with them unless you've joined a frat and paid to have friends.

"I got game, but I can't get anywhere with these chicks. They're all frat-boy cock-sockets!"

frat-boy cock-socket by tippy24 October 31, 2007