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A variation of the blumpkin where one gives oral sex whilst evacuating their bowels, thus utilizing both alpha and omega of the ailimentary canal simultaneously.

Or in laymans terms, when one sucks a cock at the same time they are also beaming Schatner off the Enterprise....the sucker is the crapper.

Note: The money shot should occur at the precise moment of final fecal release, thus synchronizing anal closure with ejaculation.
While his wife was taking her weekly shit, Ulysses whipped out his cock and got a BJ from her at the same time. Ahhhhhh...... she was the only woman he ever knew that would give a reverse blumpkin.

In the 16 hour traffic jam before the Phish show, we observed a woman run into the woods with her boyfriend. The two perched on the steep banking, not hardly out of sight of the headlights, when she pulled down her dress, revealed her stark white ass, and assumed the squatting position. She was squatting too long to merely urinate and was obviously laying serious cable. To our amazement, her head dissappeared into the mans crotch!! Social morays be damned, this was a reverse blumpkin, and the symphony of car horns signalled the glee and elation of the stunned masses.
by Buckingham Green October 28, 2004
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Nov 27 Word of the Day
A stupid person; it refers to the lack of surface area on an individual's brain. The general thought is that the more surface area (wrinkles, creases, etc.) a brain has, the smarter the person is. Conversely, a person with a smooth brain (no wrinkles) has less surface area and would therefore be stupid.
That fucking smooth brain put his shirt on backwards again...

That smooth brain is dumber than a pile of shit.
by Tip Tank May 14, 2011
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A rare event in which a woman deficates while performing fellatio. Also see blumpkin, brother blumpkin, reverse brother blumpkin
The reason Jason and Darcy are still dating is because he is cool with wipping her ass, but only after she gives him a reverse blumpkin.

The odds of successfully navigating an asteroid field are about the same as receiving a reverse blumpkin!
by Inuit Dust Commando! October 28, 2004
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All the other definitions have it wrong. You are all thinking of the Inverted Blumpkin in which the female poops and sucks dick.

The Actual meaning of a Reverse Blumpkin is when the female sits on the toilet and poops while the male is on his hands and knees eating out her pussy.
Girlfriend: Hey I'm taking a shit, come eat me out.

Boyfriend: You want me to give you a Reverse Blumpkin?

Girlfriend: Yes.
by Gundament2 May 29, 2012
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1) Like a normal blumpkin, but the girl is taking a shit and giving you a blow-job.
"Man that crazy girl from class wanted me to come in the bathroom while she was shiting so she could give a reverse blumpkin. But I said "no thats nasty!"
by Chris November 17, 2004
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The act of receiving oral sex from another person, while that person whom is simultaneously defecating.

"A reverse blumpkin? It's like the time that your sister was taking a shit and I made her suck my cock."
by XimiliXimilus March 02, 2009
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When a girl sucks a guy's dick while he's standing in front of her as she's taking a shit; the opposite of a blumpkin.
I gave my boyfriend his first reverse blumpkin this morning!
by SessyPung423 November 02, 2014
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