boob holster
A bra, especially one that is tight-fitting.
Girl 1: Jennie! Grab your boob holster, and let's go! The dance starts in ten minutes!
Girl 2: I can't! My bra doesn't fit right!
Girl 2: I can't! My bra doesn't fit right!
Boob holster
A synonym for the word bra
“Omg why did you leave the house without a boob holster???”