bag skate
n.— «Hockey players call it a “bag skate.” An early-morning practice during which a cranky coach skates his disinterested team till the players are bagged. Out of gas. Exhausted. A bag skate is a great attention getter for a coach who thinks his team has lost its focus.» —“Sutter delivers warning: Trouble is, what will coach do next time Flames falter” by Bruce Dowbiggin Calgary Herald (Alberta, Canada) Nov. 6, 2003. (source: Double-Tongued Dictionary)