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1.
Commonly used as a nick name for Andy Bernard in the popular hit series "The Office" Andy Bernard is played by actor Ed Helms.

Nard Dawg; Nard Dog

(NAHR) (DOG)
Andy Bernard: "Does the Nard Dog want Nard Pups? Yeah, I want a big ole litter of Nard Pups, all jumpin' around, suckin' on the TEET. Put em' in a box give em' to my neighbors...Yeah I want kids.."
by stevetheg December 22, 2011
 
2.
Awesome, unbelievably extreme in nature.
"That's so nard-dog!"

"Yo, that 360 in the half-pipe was totally nard-dog!"
by Nard-dog August 19, 2009