Any man who is in a relationship with any amazing woman of Theta Nu Xi Multicultural Sorority, Inc. This man is devoted, loving, caring, etc. He will do anything and everything to be with an exquisite Theta Woman.
Man#1: "You datin' that girl from Theta Nu?"
Man#2: "Yeah, why?"
Man#1: "Dawg, you done turned into a Theta Boo!"
Man#2: "Yeah, why?"
Man#1: "Dawg, you done turned into a Theta Boo!"
by thetaboo4life January 20, 2009
Get the theta boomug.