1 definition by Missbitch485

The smallest bra size. Most often think it's bad to have an a cup but it's actually better. When you're in your 30's+ your boobs won't sag whereas bustier girls will.
Jane- haha you have an a cup while I'm a c cup hashtag #flat

(A few years later)
Jane- I'm only 28 and my boobs already sag... You're so lucky because they're small and cute and don't sag. boobs small boobs pretty lucky itty bitty titty comity
by Missbitch485 February 12, 2016
Get the a cup mug.