rock popper
n.— «Andre didn’t have an oyster until 1988, when he moved to Daytona, and worked as a shucker at a raw bar. In fact, that’s where his name comes from. His first night as a “rock popper,” he kept getting $5 bills as tips, so everyone started calling him “Fin.”» —“‘Aw shucks’: Culinary Arts, Wine and Brewfest a feast for oyster lovers” by Gabrielle Devenish Post Independent (Glenwood Springs, Colo.) Oct. 25, 2005. (source: Double-Tongued Dictionary)