A sex act involving meticulous preparation whereby a male (or female with penis) shaves his testicles, gooch and head and proceeds to store the shaven hair. Step two requires minor culinary skills in that a couple of Mars Bars must be heated in a pan and brought to highly viscous (thick), yet fluid, syrup. The newly created concoction (after cooling to a lukewarm temperature) is then carefully lathered onto the perpetrator’s earlier prepared erected penis and testicles. All the shaven hair is generously applied to the chocolate-coated trouser snake until it is completely covered to create an ‘ewok-type’ appeal. The final, and crucial, step is to coax a female to initiate the art of felatio on you and, in a jack-in-the-box-style maneuver, reveal your Middle Eastern Mars Bar.

*NB: It should be noted the Mars Bar syrup possesses both practical and aesthetic qualities:
Practical - to allow the hair to stick;
Aesthetic - to act as a dark background to the hair

"She was coughing up chocolate fur balls for weeks after I gave her the Middle Eastern Mars Bar at Stylzie's place after Dirty Thursdays"
by GTD May 13, 2006
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Another way of saying "Are you joking?!"
Guy 1 "I shagged her last night!"

Guy 2 "Wash your mars bar!

Or,

"Your washing my mars bar!"
by Immi June 30, 2006
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When a person accepts a shit into his or her mouth from another, usually a close friend.
Those two guys were really close, did you know they gave each other deep friend mars bars for christmas?
by Willy Wanker III January 10, 2011
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Clenching and unclenching your buttcheeks as if there was a Mars Bar jammed inbetween them. This is to ensure you keep the blood flowing when standing still for a long period of time.
Instructor: To keep the blood flowing don't forget to eat a Mars Bar. Don't fully eat a Mars Bar, and don't produce a Mars Bar.
by jentlemangack December 04, 2020
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Mar bar

Mar bar is used for a girl called Demi hardy she rammed it up her fanny
Eg: Lilly: did you hear about demi hardy ramming a mar bar up her fanny
by January 24, 2021
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A now-closed drinking establishment formerly located in the East Village neighborhood of Manhattan. It was widely considered to be New York City's premier location for getting yourself stabbed or picking up a communicable disease.
Guy 1: After the Mars Bar, then what?
Guy 2: The doctor.
by mondaymonday February 27, 2016
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Finding a dog turd whle using a strimmer,spraying yourself and anything within 10 feet with shit.
Dave..You've been cutting the grass.
Barry.. How did you know?
Dave. You've got a bit of shit on you.Been strimming the mars bar.
by gotgcoalman September 11, 2016
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