Happy Birthday amongst the skate/surf culture . A Birthday Greeting from the extreme Sport culture started on Oahu at the beginning of the 21st Century.
"Have a great day of rippin up the streets on your day, Happy Gnarthday Emma!!!!!" or "Big ups to you surfing bra! Your day! Happy Gnarthday!"
by Armi Mike October 30, 2013
Get the Gnarthdaymug.