LapFoiled Share definition Flag A black soot smudge on or near crotch area created by someone passing out and dropping tinfoil on lap while smoking heroin. Doing all that heroin looks like Amber got herself lapfoiled. LapFoiled by hardgranite0202 August 1, 2022 0 0 Get merch Get the LapFoiled mug. Buy Now — $32.95 See more merch