A box used on old western films to hold the fake boobs of the gun totin' prostitutes. These prostitutes would were the fake boobs in order to get a wider audience. The box was usually made out of mohogany.
"Yo Betty, bring my over the titbox, for good keepins" Said Horny Ron
by N ate Efron June 25, 2005
The hitboxes of a character in a fighting game, especially of the breasts.
I was researching the titboxes to help understand the game
by SuomynonaSentry September 15, 2014