A state of mind similar to Tourette's Syndrome often experienced by the lifeless 10-year olds who play Call of Duty. Symptoms include, but are not limited to:
- Mood swings
- Shouting random crap
- Violent outbursts
- Unpredictable behavior
- Anxiety
- Rapid heartbeat
- Irritability
Things that cause Call of Duty Syndrome to flare up are:
- Meeting a German
- Planes
- Helicopters
- CoD haters
- Meeting a Russian
- Being approached from behind
- Fresh Air
- Sounds
- Existance
- Everything not mentioned here
by InvisibleWater June 30, 2012
Top Definition
A term coined to describe the recent trend of games and formerly respected gaming series' to be dumbed down to appeal to the larger, absent minded CoD base. Symptoms include short, repetitive gameplay, linear levels, simple controls and an average gamer age of 12. Recent examples include Ace Combat: Assault Horizon and (soon to be) Mass Effect 3.
"The new Ace Combat game has a serious case of Call of Duty syndrome"
by genericname October 14, 2011
A period in which you shouldn't go out in public after playing Call of Duty. Amount of time depends on time played. Symptoms can be hiding or trying to look for an RPG as you see a plane, confusing it for a Harrier Strike. Meeleeing someone when you see them running towards you. And many others.
Guy 1: Look man, a plane!

Guy 2: FUCK FUCK FUCK FUCK FUCK FUCK! WHERES MY JAVELIN!

Guy 3: Chill out man, you just have Call of Duty Syndrome.
by the-informant96 February 01, 2010
Similar to Tourette's Syndrome, Call of Duty Syndrome causes irritability, nervous tics, and outbursts of swear words. This usually happens when someone gets killed repeatedly in Modern Warfare 2.
Jimmy: COME ONNN! HOW DID HE SEE ME? F!*#

Dan: Dude, turn the Xbox off. Your Call of Duty Syndrome is flaring up again.
by CaddyDan March 28, 2010
Let's first break it down.
Call Of Duty:a popular video game
Call Of Duty (aka: Cod) is a game that, when played too much, can cause this syndrome. It's easy to spot someone with Call Of Duty Syndrome. And gamer who constantly gets frustrated at a video game because of, lag, an over powered weapon, poor game mechanics, yet never their own fault that they are doing poorly in the game. They also blame modding, and hacking and even if they like the hand they will say it's a terrible game because their doing poor. They also blame their team, however a bad team is a common frustration in gamers with and without cod syndrome.

Call Of Duty causes this because it often has lag, over powered weapons, and poor mechanics etc. so players tend to blame these things and use it as an excuse for doing poorly in any game.

People with Call Of Duty Syndrome often think they are good at every game because trick shotting, an unfortunate fate of cod, raises gamer ego even though it's purely luck getting a 360 ladder jump silent shot YY or some bullshit. Excuse my language, though if your looking this up your probably used to this language.
Gamer 1 (with symdrome): wow what an asshole using an overpowered weapon man I swear this game sucks!
Gamer 2 (without syndrome): You've played too much cod lately, you've got Call Of Duty Syndrome, you should stop playing it for a while.
by Gamerking July 06, 2014
Mental state in which a person instantly and/or violently reacts to any sound or action similar to something experienced in CoD. Side effects include anxiety, rapid heartbeat, fast-paced breathing, and the desire to find a good hiding spot.
*Guy is waling down the hall with his buddy*

Guy 1: Meh, english class blows.

Guy 2: +1 on that.

*someone runs around the corner*

Guy 1: WTFOMGBBQPIZZA!!!! *jumps backward and pretends to ADS*

Guy 2: Bad case of Call of Duty Syndrome
by AL_PS3 March 04, 2011
a. A symptom that usually plagues males between the ages of 10 and 30 causing them to be unable to disassociate the game "Call of Duty" from reality. The game "Call of Duty when chronically played can cause a disorder of the mental process including a state of confusion, personality changes and impaired reasoning.

b. Those who play "Call of Duty" in a persistent and recurring way tend to start believing that they are part of a military organization, With their mental state in disarray they tend to believe what they do in game is all real and that they have actually done the feats that their avatar or character in game has accomplished.
Example a. Excerpt taken from real person suffering from Call of Duty Syndrome who threatened a YouTube personality

a. "What the fuck did you just fucking say about me, you НO0ОଠOOOOOОଠଠOoooᵒᵒᵒᵒᵒᵒᵒᵒᵒ? I’ll have you know I graduated top of my class in the 👌👀 good shit go౦ԁ sHit👌 academy, and I’ve been involved in numerous secret raids on 👎Baaddd ShIT👎👎👎 👎, and I have over 300 confirmed (chorus: ʳᶦᵍʰᵗ ᵗʰᵉʳᵉ)👌👀. I am trained in 👌👀👌👀👌👀👌👀👌👀 warfare and I’m the top shiter in the entire US armed mMMMMᎷМ💯 👌."

Example b. Person(s) talking about suffering perosn(s)

b. "Tim lost it, he is always on the look out for IED's and told me that he has over 300 confirmed kills with an RPG, yet he has never been in the military... I think Tim is suffering from Call of Duty Syndrome or COD Syndrome."
by Braotis July 23, 2016
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