A severe case of the shits that, upon exit, resembles the sound of a shotgun being fired out of your ass. Usually caused by eating 4 or more dollar menu sandwiches in one sitting from including, but not limited to, McDonalds.
"Ughh I have the McShotguns today."
"What did you do? Eat two McChickens last night?"
"I don't have the McShits."
"Two McChickens and a McDouble??"
"Not the McSplatters either."
"You couldn't possibly have eaten..."
"The McShotguns dude."
The combination of taking the bottom piece of bread off of a McDouble and a McChicken and putting them together in a single sandwich. Invented by me on April 6, 2006. Quite the hit amongst the youth in Mentor, Ohio where it originated from. Also, the tastiest $2 you could ever spend.
"What are you gonna do with your last two dollars Franklin?"
"I'm gonna get me a McDoubleChickenBurger!"