To be naked from at least the waist down during a camping trip. Only men can neanderball.

From the Rhett & Link sketch, "Camping".
(Link uncovers the bottom half of his sleeping bag and Rhett immediately turns away)
Rhett: Oh! I didn't know you were neanderballing it down there!
Link: Just don't look then
Rhett: It's not the looking it's the knowing!
by ZeeDeutschman October 25, 2015
Get the Neanderballing mug.
An incredibly hairy nutsack
I shaved my balls last night it was about time I had neanderballs
by davidm998 May 25, 2016
Get the neanderballs mug.