tank n.— «The caddies work six days a week, assigned at “the bench” above Sankaty’s parking lot. Carrying one bag—a tank in camp parlance—nets $70, in addition to a tip that averages about $20.» —“At Camp Sankaty Head, Young Caddies...
skull-crusher n. a weight-lifting exercise in which one lies face upward on a bench and uses the arms to extend barbells above the face and head. (source: Double-Tongued Dictionary)