The back door dumbledore is a famous sexual position form the never released movie in the 'Harry Potter' series.

It essentially consists of a wizards hat, a broomstick and the anus.
1. "Ron! Ron! Get the bandages! I just got back door dumbledore'd by Hagrid! I never understood why Mrs Moganagle made the curfew for first year students! Hagrid has a taste for pre-pubescant boys! Ouch!!"

2. "Arghh, it burns. I never realised Tobasco Sauce could be used as lube!"

3. "Harry Potter, would you stay behind after class. I need to have a little word with you." 😈
by Gary the goat October 16, 2014
Get the Back door dumbledore mug.