Clashtray Share definition Flag When one has ashed their cigarette in a womens cleavage, said cleavage becomes a clashtray. Boy 1 to boy 2: I dare you to ash in her cleavage.Girl: stay the fuck out of my clashtray. Clashtray by Cockmonkey flankers August 25, 2011 0 0 Get merch Get the Clashtray mug. Buy Now — $32.95 See more merch