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15.
The McGangbang is basically a custom order sandwich from McDonald's. It consists of a McChicken sandwich inside a double cheeseburger. Though the origins of this sandwich have been argued about on numerous occations this sandwich was actually invented by an employee about five years before it's debut on Youtube in 2008.
I'm really hungry, let's go get some McGangbangs.
by tehrealmcgangbang April 11, 2011
 
16.
McChicken inside a McDouble. Also, Chris and @.
Gimme a McGangBang, BITCH!
by 1/2McGangBang May 21, 2011
 
17.
Really awesome sandwich brought to you by Mickey D's. It's made by placing a McChicken inside a Double Cheeseburger. Be warned just because your mouth is big enough to order it that doesn't mean it's big enough to bite it.
Before the Partwii, Lauren, the cyborg, bus surfed over to Mickey D’s with his brofriend Chuck Norris and bought a McGangbang happy meal with the funds that he jacked from his sugar momma after his disco nap that afternoon. Chuck pulled out his phone from his nuthuggers and started sexting a ginger slice with a tramp stamp that he had been friendly following ever since they shared a game of Jager pong. Lauren gave Chuck the air jerk as he noticed Tanasa the grade digger that sat next to him in his art class. Lauren gave her the “let’s just be friends” nod and grabbed his happy meal. As Lauren walked outside he saw, Bruce, the designated drunk, as he started wailing teenybopper show tunes. Bruce was manstrating again and wanted his fix of Dr. Pepper and Big league chew. The night of celebrating Lauren’s nomotion had barely even started and already he was knackered.
by Micron X February 24, 2010
 
18.
A McChicken sandwich inside a double cheeseburger.
"Man I just ate a McGangBang and I think I'll never eat again!"

"He got a heart attack from eating a McGangBang."
by The McGangBanger May 13, 2009
 
19.
A combination of two or more McDonalds' sandwiches. Usually a Big Mac, replacing the center bun with a JrChicken. Thus creating an orgy or gang bang of taste in your mouth.
Customer "hi can I get a McGangBang?"
Server " how would you like your gang bang today sir?"
Customer " greasy and fat lol "
by MrAccOnDaHubs January 25, 2011
 
20.
Three Somee With A Girl & Two Guys
Rob- "Oh Sandy Wanna Have A Mc Gang Bang With Me & Sam"
by Mm' Nooo July 21, 2010
 
21.
(Noun) A McDonald's chicken sandwich stuffed inside the middle of a double cheeseburger.

Or

(Noun) This awesome facebook group facebook.com/home.php?#!/group.php?gid=114744058560778

Or

(Verb) Performing unholy sexual acts onto another individual.
"Dude, that McGangbang totally hit the spot!"

Or

"Dude, I totally McGangbanged your mom last night!"
by Mr. McGangbang May 04, 2010