Nerpin'

When you're so extremely tired that you begin to get loopy.

Oooh mannn I'm nerpin', I should probably sleep or I might do something bizarre.

by Milkywayyyyyy December 11, 2010

Nerpin

It is what you call your nipples when they get hard.

Friend: dude, your nipples are hard.
Me: how about that, I'm nerpin.

by Dizymay_93 November 26, 2009