Made famous by Jimmy Pop of The Bloodhound Gang in the song "A Lap Dance is so Much Better When the Stripper is Crying", it essentially means the cock entering the vaginga.
"So, Bambi's goin' on about how she can make all my fantasies come true.
So I says, "Even this one I have where Jesus Christ
is jackhammering Mickey Mouse in the doo-doo hole
with a lawn dart as Garth Brooks gives birth to something
resembling a cheddar cheese log with almonds on Santa Claus's tummy-tum?"
Well, ten beers, twenty minutes and thirty dollars later
I'm parkin' the beef bus in tuna town if you know what I mean."
So I says, "Even this one I have where Jesus Christ
is jackhammering Mickey Mouse in the doo-doo hole
with a lawn dart as Garth Brooks gives birth to something
resembling a cheddar cheese log with almonds on Santa Claus's tummy-tum?"
Well, ten beers, twenty minutes and thirty dollars later
I'm parkin' the beef bus in tuna town if you know what I mean."
by Ian Schultz September 23, 2007
Get the parkin' the beef bus in tuna townmug. by Aesop April 30, 2004
Get the Hitler has a Roast beef sandwichmug. 
by Blame The Clown May 7, 2018
Get the Moo Shu Beef Jerkymug. n: what happens when a girl with roast beef curtains and a boy with an uncircumsized penis have sex. His dick cheese mixes with her roast beef curtains.Throw 2 buns on it and you got a roast beef and dick cheese sandwich!
by BlackOutCrew January 17, 2008
Get the roast beef and dick cheese sandwichmug. After blasting my thick load all over Audries double D tits I lightly tossed on a moldy piece of deli meat and spread on some of her moms finest homemade honey mustard. Capping off a well pernounced and high priced Rodchester Roast Beef Sandwich
by Boar Spinelli January 1, 2009
Get the Rodchester Roast Beef Sandwichmug. "man i was about to bang this chick and a i went down on her and her box looked like an 'arby's roast beef chedder melt' in an old catchers mit."
by zak2 July 15, 2006
Get the arby's roast beef chedder meltmug.