Not only is it getting head while taking a dump but you have to actually splash water on her (or his) chin while receiving the blowjob
After she gave me a blumkin she didn't only have to wipe her mouth, she had to wipe her chin.
by Hobojoe75 December 21, 2008
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Getting a blowjob while taking a crap.
I was on the shitter smoking a fattie and that bitch came up and gave me a blumkin.
by Bullitt Bob March 19, 2009
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When a guy is given a blowjob while taking a shit and eating his favorite sandwich
"Vanessa totally gave me a blumkin for my birthday last night. Turkey and swiss, hells ya!
by Foxxxlove February 16, 2009
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(verb) having received a blumkin, often in a particularly satisfying manor; see blumkin
person one "dude, sarah totally blumkinated me yesterday."

person two "dude, awesome."
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This is when some one, usually a male, masturbates whilst on the loo havin a shit.
Mum: You've bin ages in ther johnny. What you up to?
Johnny: I'm having a blumkin mum.
Mum: Ok then, judt don't be to long. Dinners ready in a minute. And wash your hands after!
Johnny: Yeh sure mum!
by the real nemo September 19, 2006
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