The name given to a vagina with very meaty loose flapping labia lips, which more than not smells like a week old plate of rotting anchovies. I have fucked a woman such as this. I'm not proud but there you go.
"Oh, please tell me you didn't fuck her beef sandwich vagina."
"Man, I wasn't going to but it had been a while and besides she was splayed out on the bed and it would have been rude of me to pass up on that."
"But dude, I've heard she's got more of her cooch outside of her than in her."
"I'll be honest, I did dry heave a number of times but once in, it was all good and fine. The aroma was a bit on the nose though."
by mammarylane October 23, 2015
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the well had portions of a chick's fuck hole the hang after a long ball session. Much like meat curtains
dam I banged her so hard it looked like a roast beef sandwich when I was done.
by J.F. February 12, 2003
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a distigusting vagina also soemtimes known as mac n' cheese should not be traded for prime rib

a.k.a. - kaitlyn
oh jesus gil you gave up prime rib for a roast beef sandwich?
by not chris turner November 23, 2007
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When you fuck your cousin so hard her pussy falls out so you put some bread and mustard on it and eat her out.
Me: bro i ate a mississippi roast beef sandwich last night!

Friend: that sounds awesome, what is it?
Me: my cousin!
by bigboy992 March 30, 2021
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I rather loose vagina found on nasty sloot doggies who sleep around a lot. Some men might find it attractive but others prefer a nice tight vagina. All personal preference.
"I noticed after Lucy stopped using her vibrator every night her roast beef sandwich tightened up" Ken
"I remember the first time you fucked, you had to stick your dick and her vibrator in at the same time" Ed
by toeingmywayintokiki August 7, 2016
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A very gross, loose and saggy vagina that resembles the thick shreds of meat in an Italian beef sandwich. Generally found on strippers and porn actresses.
"Ew, did you see that stripper's Italian beef sandwich vagina? I want my fuckin' money back."
by Dave Losso November 13, 2007
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When a guy eats a woman out after she’s banged multiple dudes.
Stacy came home after a girls night out last night and I wanted to surprise her, but ended up eating a roast beef sandwich with Mayo instead! That cheating whore!
by Reversecougar00 December 23, 2022
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