Fresh off an Oakley ad goggle shoot, Sammy Carlson dropped by the POWDER offices this week to score some coveted POWDER schwag and stickers. The 18-year-old found the time in between Oakley obligations and a SoCal surf session to sit down and discuss his floundering ping-pong sills, summer plans, and his oh-so-sweet new shoes. And despite the 70 degree temps outside, the recent high school grad is still rocking a beanie holding up his Tigard, Oregon, rep—snap! Listen to what the 2007 Winter X Games Slopestyle silver medalist has to say…