Ultra Blumpkin 

The act of receiving oral-sex while having explosive diarrhea.

Guy: Dude, your sister got drunk and gave me an Ultra Blumpkin last night.

Ultra Blumpkin by Gettin' A. Beejay March 21, 2010

ultra cripto blumpkin 

similar to a standard blumpkin, with the difference being the receiver is performing an upper deck.

I walked in the bathroom at the party and timmy and jill were doing an ultra cripto blumpkin (getting a hummer while doing an upper deck).

ultra cripto blumpkin by robharry April 8, 2011

blumpkin ultra supreme

The art of receiving a blowjob in the 69 position with the man on top and subsequently defecating on the performer's face. Related to the blumpkin supreme except ensuring that the fecal matter is promptly and accurately placed on the lucky recipients face.

Chelsea had to have a warm shower after giving her friend a most satisfying blumpkin ultra supreme.

blumpkin ultra supreme by Stuart12345 April 13, 2007

Ultrablumpkin 

When one person receives oral sex from two or more people while dropping a deuce. Supposedly pleasurable, however it is extremely difficult to achieve release from both ends at the same time.

Lucy and Ethel gave Fred an ultrablumpkin for his birthday, while listening to the radio.

Ultrablumpkin by TheMishkin June 11, 2006