Definitions by Harri Balsonya

Penis grind 

when you attempt a 50-50 on on a ledge or rail while riding a skateoard, you dont pop enough and your back truck doesnt make it on.(like a backwards smith gring)

"Bro you fuckin suck, quit doin penis grinds and land it."

Penis grind by Harri Balsonya March 4, 2009