Top Definition
A sexual position which consists of a blumpkin except where the one giving the blumpkin fucks a small, pasty frat boy in the ass.
Tom: I got a Soloblumpkin last night.
Alex: So you had a good time at the frat party last night?
Tom: You could say that ;-)
by Cockdriller June 04, 2010

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Masturbating while taking a shit
Friend: "Hey Bill, you wanna play some basketball?"
Bill: "I would, but I'm kinda constipated and horny so I'll go for a solo blumpkin."
by danglyballzjohn June 09, 2015

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