Is when your wearing a bra so tight & small, that when you take it off, your tiples are smashed into your boobs. It is usually very uncomfortable.
Forms of the word: Brash, brashed, brashing, brashee, brasher etc
Person1: Dude, I need a bigger bra!
Person2: What? Are you brash(ing)?
Person1: Yea! I freakin hate it.