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1.
a total bad ass. someone who kills at their skill, totally wrecks it. usually works hard for what they want/do. often a crazy mothaf*cka..
did you see that kid shred? he's a straight up gnar dog.
by maddienig. June 20, 2006
 
2.
An expression of excitement, resulting from something extremely impressive
That trick he pulled on his skateboard was straight gnardog.
by Miles Dan October 02, 2004
 
3.
Someone that shows the qualities of a complete badass.
That guy is a gnardog, a straight gnardog.
by Dahme February 17, 2007
 
4.
A word used to describe awesomeness. A knock-off of the word gnarly.
a. Guy 1: DUDE THAT WAS SO SICKZ0RZ OMG OMG. YOU NAILED THAT POOP.
Guy 2: on a scale of 1-10 how many GNARDOGS WAS THAT?!?!?

a. Guy 1: that was so gnardogs!
by Reverend Buddy December 01, 2007
 
5.
A hot dog wrapped in bacon. This is a popular street food in northern Mexico, fried on a hot, flat griddle and sold on small mobile carts.
Dude, after we drink 15 beers at this cantina, let's eat some gnar dogs and then puke in our beds.
by chowzdown March 23, 2010
 
6.
Sean Phinney, Ryan Rawlings.
Gnar Dog:Sean Phinney, Ryan Rawlings.
by Straight THuglife for real. October 15, 2008
 
7.
the act of farting in your cuped hand and immediatley shoving it into another's nostrils
Guy One: what's it called when you fart in your hand and put it in someones face?

Guy Two: GNAR DOG!!!
by pfunk2323 October 25, 2009