Padded Bra
Also known as false advertising. It's a specially bought bra that is lined with cotton, air pockets, sand, water, or gel to make the boobs perk up and be natural looking. Common around teenaged girls.
Damn! Those are some giant boobs. She must be wearing a padded bra.
Boston Bra Pad
The act of a woman seductively rubbing snow between her breasts.
"Oh man, we were outside in the snow, and she showed me a Boston Bra Pad."