Definitions by ZippyPinhead

gnarbo

Morning wood. E.g. gnarly boner.

Dude, I woke up with a gnarbo this morning and couldn't piss! It was up before I was!

gnarbo by ZippyPinhead October 1, 2015

Gnarbo

Morning wood. A hard-on you get first thing in the morning.

Damn! I had a wicked gnarbo this morning! It was up before I was!

Gnarbo by ZippyPinhead September 28, 2015