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this is an activity where someone takes a bath and farts in the tub to make little fart bubbles. now the creative part. the person performing this activity tries to bite the fart bubbles before they pop.
oh shit man, taking baths used to be boring. now i get my fun by fumping in the tub.
by rammsteinfreak March 16, 2009
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Derived from the words fap and hump. Means to masturbate by humping an inanimate object, such as a pillow, while fully clothed, cumming in your underwear
A young man planned to fump his pillow after he became aroused by watching footjob porn videos.
The boy fumped his pillow at least 2-3 times a week.
The parents of the boy confronted him on his fumping habits as they did not like having to wash his jizz soaked clothes.
by Introvertedcookie1 October 05, 2015
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When you sit on the toilet and you think your going to take a normal dump, but then you EXPLODE and you fart and take a huge dump at the same time.
guy 1: "Man that was loud!"

guy 2:"Yea, I fumped like a motha' fucka'!"
by RandomRiceCake March 14, 2011
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When a man gets a sex change and has his penis turned inside out, But later after the surgery he gets and erection and if shoots back out into a penis again.
Oh shit guys turn that porn off or I'm gonna Fump!

That guy was gonna fuck me but when i saw his hot body i fumped and he left

Sometimes i put puke in my mangina and watch porn till i fump and shoot puke all over the place!
by Drewster UHHH December 29, 2007
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FUMP (fump) n. <fumpy, fumps>, adj. <fumpishly>

1. Fucked Up Magee Person. Challenged individual who casts a social a plague upon the community.
2. A person who engages in an activity without talent or skill.
3. A person who has failed significantly at something.
4. Something or someone that disappoints.
5. A sexually immoral predator or sex addict.

(fumpish, fumpy)
He was the most fumpish person I ever met.
Wow, only a fump could have failed that test.
by Jedi Pimp January 22, 2004
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