marumpkin Posted in M Best definition marumpkindrugs Smoking marijuana while getting a blowjob while taking a shit. Similar to a crumpkin. Dude, I got so bored smoking weed with my girl that when I took a shit she gave me a marumpkin. How satisfied are you with the definition? Looking for marumpkin meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 66 times.