The act of vaginal intercourse while one partner defecates. This adds on the term 'blumpkin' which is receiving oral sex while defecating and combines with pie, referring to the woman's genitals. To the humorless, this is an intentional rhyme with 'pumpkin pie'.
She snuck into the bathroom stall and gave me a taste of blumpkin pie.
Contrary to popular belief, this is NOT the first time a blumpkee receives a blumpkin.
This occurs when the blumpkee's deuce is in the form small terds no larger than 1/2 inch in diameter. The IBAA(The International Blumpkin Association of America) also requires no less than 10 terds to be considered a Blumpkin Cherry Bowl. Less than 10 is considered to be a Blumpkin Cupa Cherries.
I wasn't sure if it was an official Blumpkin Cherry Bowl last night until I actually counted the terds. I though it was only 9 but the dingle berry I had dropped off at the end.
A mixture of Piss Female Cum, Vaginal Sweat, and occasional Period Blood, which is drunk by a man performing a Blumpkin on a woman. The man will start to thirst for more Blumpkin Cunt Pussy Juice, and become a Blumpaholic.
When a guy gets a good-ole fashion blumkin and he gets a surpise. Unknown to the blumkinner or blumkinee an evilasshole has saran-wrapped the toilet seat, thus the "SURPRISE!"
What the fuck! Yesteday my girlfriend finally agrees to give me a blumkin and I ended up with a blumpkin surprise. Let's just say shit hit the fan-ny.