Top definition
To sit on the top of the toilet and take a dump in it, while a girl is sitting backwards on the bottom. She is taking a dump and wearing a pumpkin on her head while giving you dome.
Friend 1: Heather came over and gave me a double decker reverse pumpkin blumpkin on Halloween.
Friend 2: Dam shes notorious for that.
by jrizzel July 29, 2014
Get the mug
Get a double decker reverse pumpkin blumpkin mug for your Facebook friend Jerry.