Can describe anything groovy/cool, but these days usually refers to musical talent.
She has a nifty singing voice, and those nifty digits can sure play the keys!
a lot of something
OR
something heavy
"my teacher gave us a nifty assignment"
A Reddit enlightenment that celebrates boobs of all shapes and sizes.
I have no problem writing “nifty tits” on my boobs and posting them to r/NiftyTits so that I can feel empowered and uplifted!