napgasm 

The amazing feeling that shoots through your body while stretching after a great nap.

I woke up after a half hour and when stretching out had a toe curling napgasm.

napgasm by MFornoNT85 March 1, 2010

Navgasm 

The feeling of complete release after looking at Navigation Charts for countless hours, culminating in an explosive discharge of way-points and fix bearings.

After prepping the charts for hours, it culminated in a wonderful navgasm when I found four new courses that we could use to take thirty minutes off the trip.

Navgasm by Captain Dubs July 11, 2009

nagasm 

A group chat that stinks really bad.

"Are you in a nagasm?"

"thank GOD NO."

nagasm by timesangel January 25, 2019

Nargasm

Nargasm (nar-ga-sim) noun: Feeling of complete bliss due to creative enlightenment. (2) nargasmic-adj.: Denoting a feeling of nargasm.

Oh, you just made me get a nargasm.

Nargasm by The Original Nargasm June 16, 2010