Top Definition
Someone who gets around, and often sleeps with members of a fraternity.
Person #1: Let's do some word association. Frat Mattress.
Person #2: Whitney
Person #1: Why?
Person #2: Because it just seems to fit.


Whitney is such a frat mattress.

by rusty bellige November 18, 2008
1. Adjective. Loose person.
2. Female who sleeps with lots of men, usually members of a fraternity.
Laura is a big frat mattress.
by Matt December 07, 2004
Free Daily Email

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

Emails are sent from We'll never spam you.