Slang; referring to a threesome in sexual nature, consisting of two females and one male, where one female is penetrated anally by the male and he removes his penis and is then defecated upon. The second female is then presented a stool-covered penis, to which she orally receives (like a toothbrush)
A German Toothbrush is defined as; Roy was banging Shelly in the ass and after he took it out, she shit on his dick and then Roy had Mindy give him a BJ, eating it all.
by Riles_Silmaril April 2, 2021