toxic dick Share definition Flag When a guy has a really good dick, but he's incredibly bad for you in every other way, but you're addicted to banging him. "Man I know he's fine, but he has that toxic dick, the kind that gets you addicted. " toxic dick by Agreatfire August 14, 2020 0 0 Get merch Get the toxic dick mug. Buy Now — $32.95 See more merch