1 definition by Armi Mike
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 29, 2013