Natty Narwhal 

A consequence of drinking too much cheap beer.

Man, did you see Mark? He had so much Natural Light he did the natty narwhal all over the back yard.

Natty Narwhal by Shamus the Chair Mender August 18, 2010

Nasty Narwhal 

1.) The sickest, illest, nastiest gamer on Xbox Live.
2.) One who pwns newbs daily in games like Halo and Call of Duty

I just got pwned by Nasty Narwhal!

Nasty Narwhal rapes shitty newbs like me in COD!

Nasty Narwhal by BionicNarwhal December 9, 2010