Cupac
One of the largest family trees out there. Watch out if you meet one of these people as you will eventually meet all 500 first cousins in no time!
Mum: Oh this is another cousin on the Cupac side you haven't met as yet.
Me: Ohhhh shat!
Me: Ohhhh shat!
cupacity
How big a set of tits dat a particular bra can cradle and support.
A girl's boobs just keep getting larger and fuller da more dat they're played wif, and so if she remains "popular" wif da local chest-loving studs, she will occasionally need to "upgrade" to a bra wif a successively-bigger cupacity in order to keep "Da Twins" comfortable and securely corralled and supported.