dungfunnel Share definition Flag A term for someone's anus, arsehole, poop chute, bumhole, bunghole, backdoor, chocolate speedway, etc. Most commonly used in a derogatory homosexual context. That Grant is such a homo he's always doing blokes up the dungfunnel. dungfunnel by Donny Dugong August 1, 2008 Get the dungfunnel mug.