A chill session between three or four individuals in which said participating individuals all ingest xanax bars and chill.
Yo we're gonna have a sick bar party when i get them xannies.
by shirtforagrilledcheese December 17, 2011
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Where a girl shoves a mars bar pussy and a guy eats it out
Hey guys theres suzzie lets have a mars bar party
by Jon Dohe January 30, 2004
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A sex act between two or more persons where the British confectionary Mars Bar is cut up into chunks or the ‘fun size’ version is used whole and inserted into the vagina and/or anus and consumed.

Can be used as part of foreplay, may be seen as part of fetish play.

Whilst this practice can be highly pleasurable, there are the associated risks of contamination of the food from anal/vaginal bacteria and fecal matter which can cause food poisoning. Females in particular run the risk of toxic shock syndrome if the item gets lost in their vagina, as well as increased risk of thrush from the sugar.
Jeremy:- you’ll never guess what Paula did last night? During sexy time she pulled a Mars Bar out of her bag, shoved it up her foof and asked me to eat it!!!
Percy:- Oh yeah, a Mars Bar party. Bet it was a king size as well, the filthy bitch. Would have to be not to get lost in her baggy vag.

I learnt about Mars Bar parties at year 7 in school, not that I understood what it meant. It was at the time Barbie Girl by Aqua was in the charts. I just remember us all ‘adapting’ the lyrics for the bit the weird bloke sang to, ‘Come on Barbie, Mars Bar Party!’ (Uh uh uh yeah!) and singing it on the no. 31 bus back from school..... happy days.
by Master of Definitions August 04, 2018
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gay house party or similiar. basically a gay orgy. tend to find them in coastal towns of britain, such as brighton, bournemouth, hartlepool and seaburn.
corey and randy went to a mars bar party up the headland in hartlepool. they took sausge up the exit hole all night
by southerner in the north July 29, 2004
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Party Bar- combination of elements from dance clubs & bars to create a place everyone can go to & equally hate because the establishment is niether.

From nightclubs- "Party Bars" use a large dance floor, DJs (or cover band) playing recognizable dance hits and quick serve bottle beer & mixed drinks.

From bars- "Party Bars" are open for happy hour & appetizers, have tables & chairs, beer tubs, numerous big TVs and little dress code

The addition of the outside "Party Patio" or "Party Deck" is needed because the air conditioning never keeps up with the crowd.

This is the natural home of bachelorette parties and "woo girls"
Some of us want to dance & some want to watch sports and we all want to hook-up so lets go to a "Party Bar".
by WookieeStL April 26, 2011
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