An imaginary (yet vital) loose part hanging from underneath an unsuspecting motorist's car. Alerting unsuspecting motorists about said item is of supreme importance. Mission accomplished when unsuspecting motorist pulls over and gets out to see whats wrong with his car.
Driver 1: (while pointing at undercarriage) "Hey Sir, your Fister saster caster unit is out"
Driver 2: "What"?
Driver 1: "Your fister saster, the caster unit, it's out" (still pointing)
Driver 2: "oh really?!? oh, um ok" (pulls into rite-aid parking lot)
Driver 1 then laughs laughs laughs all the way to work.
by Mergeman August 5, 2008
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Woah look at Jon, he’s in her up to his knees
“Yeah Jon is a super fister”
by wizardvevksbv January 25, 2021
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“Look at Jon! He’s up to his knees in there”
“Yes, Jon is a super fister
by wizardvevksbv January 25, 2021
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The act or art of putting both fists into 2 viginas and lick the fistee's assholes, very popular practice among more evolved(kinky)gays. requires great care and huge amounts of lubrication and focus. Kamala Harris is onced rumured to have participated in a Fister Salad in her early years of college at Howard University.
In the middle of our threesome they both asked for a fister salad.
by Fruit loop fagoon May 7, 2023
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worse than ur mom gay and ur dad lesbian and worse than ur granny tranny combined
trevor: yo kyle ur granny tranny
kyle: ur dad lesbian

trevor: no u
kyle: ur sister fister
trevor: *dies instantly sun breaks a piece of*
by lolfagit 101 March 20, 2018
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A living being (namely a human being) whose behaviour is so hysterical, that they are now raising their fists ready to fight.

There are many stages to hysteria.

Some "scream and shout, and let it all out."

Some are mad typists on the other side of the digital platform, probably sitting on a platform waiting for a train as they rile others up.

Some bitch to their friends and start gangs tjat build up resistance to something that they feel uncomfortable with, yet have not confirmed is valid or true.

And some get so upset that they act in anger before they think clearly about what it is that bothers them, if it is actually bothering them, or even if the information is true.

The people who get upset may get "Fisterical" and try to punch anyone who brings up a topic that just pushes their wee little internal buttons.

Whether or not the unknowing opponent is actually part of the topic, or whether they are just partaking in the discussion of the topic, the keen Fisterical player will often hear only what they want to hear.

One may also use the term "fisteria", which is a state of becoming (or being) Fisterical. Sounds a bit like "fist, stare at ya", (ie: I got my fists ready and am starin' at ya). Similar to the physical representation of the word.
"Oh my gosh Samantha, he is so Fisterical, I think he is about to punch a wall or something."

"My dad got a bit Fisterical at my mum when she told him about the accident. Im glad he didn't act on it."

"My favourite soccer player got a bit Fisterical after the game and encouraged more fisteria to ensue."

"I wouldn't look at her that way, she gets a bit of fisteria when she thinks people are making fun of her. Best to stay away."
by Mr H20 July 3, 2022
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What Russel Crowe is... A man that wanks really fast and is over and done with quick...Or fists his own ass at pace, and ejaculates quick coz of it.
Super tuned up self fister!!!
Have you see his crap films???
by billy-bob.616 May 16, 2010
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