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4.
(1) To perform oral sex on a female while she is defacating.

(2) To inadvertantly reveal a piece of information that is catastrophic to your status in your social circle; to inadvertantly open oneself up to ridicule.
"Would you like to have some Blumpkin Pie" "No thank you, one slip of the tongue and I'm in deep shit!"
by B77 September 16, 2012
 
1.
The act of performing oral sex while the receptor is defecating is referred to as a blumpkin. The feces produced during this event is known as the blumpkin pie.
That blumpkin pie after Thanksgiving dinner was really delicious, I think it had some corn in it.
by Johnny Bone December 05, 2009
 
2.
Blumpkin Pie is a delicious home made recipe that any male with or without cooking skills can make.

While receiving fellatio you shit in a pie tin. Then as you are cumming, you put the cum ontop of the poo poo. Then you shove the girl's face into the pie and force feed her the rest of the meal. This is ganranteed to be a meal she wil never forget and will talk about it for years to come.
Carina: What the fuck is your problem?

Brian: What are you talking about?

Carina: The blumpkin pie you made me eat last night... there must have been a tainted substance in it because i feel nauseous and i think i'm going to blow chunks!

Brian: oh, well just don't get any on my shoes, they are new.
by edwin gaffney May 11, 2006
 
3.
The act of having a Ménage à trois while the woman is dressed as a Pilgrim or Indian Squaw. One guy is in the process of receiving a blumpkin, while the other is in the process of giving the woman a cream pie.
The first Blumpkin Pie.

While Miles Standish was in the outhouse (after the first Thanksgiving), the hot redheaded pilgrim girl started to give him a blumpkin. John Smith came by and was so aroused that he joined in and gave her a cream pie.
by Uncle Kreepy November 22, 2011
 
5.
Receiving a blow job whilst shitting in someones mouth
Last night I hade a blumpkin pie
by schlong18 November 29, 2013
 
6.
its like a normal blumpkin( girl sucks your dick while you are taking a dump) but with the blumpkin pie she will bend over before you cum and you put your dick in her butt and cum
everybody likes blumpkin pie at thankgiving
by bmx94 December 07, 2010
 
7.
When, in a reversal of the normal blumpkin, a man eats out a woman while she's taking a fatty dump.
John gave Polly a blumpkin pie in exchange for the blumpkin he had received just moments earlier.
by D-squared R-squared August 21, 2009