Nunganun 

someone who had never let someone touch their breasts, or 'nungas' and has no intention to change that.

Brad: i'm sooo getting to first base with Emily tonight!
Dave: dude, she's such a nunganun, that's never gonna happen!

Nunganun by LottieMoor June 13, 2012

nunganonga 

a girl with no tits.

me: i love this t-shirt!
girl: yes but it would look nicer if you weren't such a nunganonga :)

nunganonga by PeppyAvenue June 13, 2012