Hotel catering, A/V. Slang for large, unwieldy food tray racks. Relevant to the technician in that they are always in the way, clogging back of house corridors when trying to do a load-in or load-out; or even worse, when trying to drive a scissor lift through.
http://catalog.elakesidefoodservice.com/c-171-queen-mary-banquet-carts.aspx
http://catalog.elakesidefoodservice.com/c-171-queen-mary-banquet-carts.aspx