The Sex act of getting your cock sucked while sitting on the toilet and using a computer (laptop) at the same time.
Shit, i was so drunk last night, i was messaging you on AIM remember?

Ya man, what were you doing?

I was getting a Comblumpkin.

Aww yeah!!
by Krud April 29, 2008
Get the Comblumpkin mug.
The act of either :

A) Catching on fire whilst receiving blumpkin

B) Receiving blumpkin whist already on fire

or C) Someone who randomly but quickly (spontaneously) decides to give another blumpkin.
A) "Ohh this blumpkin is so good Karen!"
"WTFFF!! You just spontaneously comblumpkinned!"

B) "Oh shit my johnson's on fire!"
"Here, a little spontaneous comblumpkin will put that right out!"

C) "Dude, my girlfriend surprised the hell out of me yesterday for my birthday."

"Oh really? What'd she do?"

"She spontaneously comblumpkinned me!"
by Lucizzle December 17, 2009
Get the Spontaneous Comblumpkin mug.
Bursting into flames while getting sucked off and taking a shit at the same time.
"I'll be suing Joe for ruining my hairdo when he experienced spontaneous comblumpkin during our weekly meet-up in the gas station bathroom."
by squidge winkle April 18, 2019
Get the Spontaneous Comblumpkin mug.