oil-spot
v.— «Chris makes sure everyone is onboard and says to John, our driver, “We’re a bus,” which means, everyone’s on, let’s go.…Failing to leave a sign of your temporary absence puts you at risk of being “oil-spotted.”» —by Jacob Slichter So You Wanna Be a Rock & Roll Star June 29, 2004. (source: Double-Tongued Dictionary)