death cookie
n.— «The waiver releases McGowan from all liability should I fall victim to any kind of accident, including a sudden avalanche, “death cookie” (the ice-packed snow that build up on top of the trees here) or tree-well (a hole that forms under a light cover of snow just around the tree trunks).» —“Skiing thigh-high in powder You don’t have to be an expert; you need guts and few brains” by Anita Latner Toronto Star (Toronto, Canada) Jan. 7, 1989. (source: Double-Tongued Dictionary)
Further reading
A newscaster covering treacherous driving conditions offered this advice: Keep it between the mustard and the mayo. In other words, “Make sure your car stays between the yellow line and the white line on the road.” This is part of a complete episode...
Aaron in Los Angeles, California, notes while using public transit in Britain he and other passengers were instructed to alight from the front, meaning “exit the car from the front.” Alight comes from an Old English word alihtan, literally, to...