'Shitgun' can be called by one person out of more than one people that need a dump, and are faced with one toilet.

Adam: 'Christ, I need a shit, i'm touching cloth. As soon as we get home, im in there'

Joe: 'Bad luck bro, I already called shitgun on yo ass. Suffer!'
by Drzygote June 1, 2007
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Called immediately after someone calls "shotgun". Rather than getting the front passenger seat right away, you get it on the way home instead.
"Alright guys, let's get in the car."

"Shotgun!"

"Oh man... Uuhhh... 'Shitgun!'"

"Ok you get the front seat on the way there and you get it on the way back."
by Chase Cheffe May 26, 2009
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A maneuver popular amongst native Asian youths. It is executed by clasping both hands together with both index fingers extended, sneaking up on an unsuspecting victim, and attempting to sodomize said person with the index fingers.
A little kid tried to shitgun me today and broke both of his index fingers.
by mikook April 18, 2008
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This is when you do a line of cocaine on a woman's (or guy's) asshole just as they fart.
"Wipe your ass and come over here honey. Today's been a tough day. I need to do a shitgun to forget about it."
by Fghgsfjbcft July 11, 2017
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To take something noble and honorable and throw it all away in search of self promotion and damaged goods. Kind of like Anakin Skywalker threw away being the savior of the galaxy for Natalie Portman, only if you replace her w/ Lindsey Lohan and the cover of galactic douche magazine.
Darren was going to be a Jedi but he shitgunned it all and ended up getting killed by his son.
by Snips. December 16, 2011
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What a player does in Battlefield: Bad Company 2 when they select a shotgun, preferably the Neostead 2000 combat, and select the 12 Gauge Slugs specialization and runs around rooftops or in buildings safe from harm and is able to snipe other players from a distance as if he had a "shotgun sniper".
Player1: SHIT! How the hell is that medic able to kill me from the top of the building when I was behind cover and across the street! Thats bullshit!

Player2: The shotgun is ridculous! You can shitgun snip!
by Onslauqht August 10, 2010
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The act of stroking ones penis in one quick motion and firing explosive diarrhoea all over your partners body.
Person 1: Hey, I heard you and Lilly got into a fight, What did you do?

Person 2: We were going at it last night and I hit her with a pump-action shitgun. It got pretty nasty.
by 4nthrax October 23, 2014
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