look up any word, like half chub:
 
1.
A bra or bra additives that cause a girl's breasts to appear a size or two larger than they actually are.

Also a much cheaper and less permanent version of fake titties.
guy 1:Yeah, her tits looked great, until I got her naked and saw she was just wearing rent-a-boobies!

guy 2: Snap! false advertising!

guy 1: plus her bra weighed about five pounds from all the padding!
by lingling4canada February 08, 2010