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18.
To shove ones fisted hand into another's Billy Ocean or Assho'.
Susan got fisted by her lover Jessica last night. It was DA ILL NANA.
by Ant January 23, 2005
 
1.
to insert ones fist into another individuals vagina or anus
Hey Richy, please fist my anus!
by shelp March 11, 2003
 
2.
A part of a human's hand that is normally only showing when the hand is clenched. It is composed of the knuckles and the first digit of the fingers.
My FIST is sailing in the general direction of all the "Sex starved, sex obsessed, apparently heterosexual, testosterone pumped, teenage males" Who can't define FIST as anything besided the jamming of hands into various orifices in a human female's body!
 
3.
v. To insert a fist into someone's vagina or anus, presumably, to give them pleasure.

What you do if you have a small penis.
Eg. To fist, or not to fist, That is the question.
by GangstaRL December 19, 2005
 
4.
To put your hand up another person's arse. A favorite pastime of turd burglars. (How else could they burgle those turds?)
Bruce and Dennis like to fist each other in front of the movie theater.
by Joao Bufamarillo May 26, 2005
 
5.
This is when you want to let your partner know how you physically feel about them. Let me put it straight. When two fingers arent enough. As my old man once said. 'A fist in the Ass is worth two in the bush.'

Mr Fister
"Been fisten?"
"by the FISTFUL!"
mR fISTER hAD A BLISTER ON HIS SISTERS NISTER. hE ATTEMPTED TO FISTER BUT TWISTED AND MISSED HER WHILST FISTING HER FISTUL ASS INTO A FRUITFUL SLUMBER.

Compliments, The Bernhagen Brown Love Team
by Clayton prost March 23, 2005
 
6.
Army Acronym for Fire Support. The Army MOS of 13F is a Fire Support Specialist, they are also referred to as a FIST team on the company level or FISTer on an individual basis. A FISTers job is to seek out enemy targets and give coordinates to the target so our artillery can successfully engage the enemy from a safer location.
Man Alpha Co. has one bad ass FIST team.
by ISU Drew February 09, 2009
 
7.
Varitation of shaft, but used for extra emphasis in the case of an extremely large shaft. Harsh, unfair treatment. Refers to the pain of having a fist rammed up your ass.

See also double fist
I got a $300 speeding ticket today. That sucks, man, what a fist.

So I got the fist when my boss caught me drinking at work.
by Binford August 09, 2003