This term is usually associated with online games. The term is used in the event a player describes a situation in which the outcome was unbelievable, unlikely, or amazing. Player(A) then describes the event to his friend, player(B), who was not there to witness the event, which to him sounds unbelievable. In which case, player(B)in disbelief says, "Screenshots or it didn't happen."
Player(A): LOLWTFOMG!11!!cos(0)1!!!! HAHAHAHAH, I just one shotted a paladin through his nub shield.

Player(B): Screenshots or it didn't happen!

Player(A): HAHAHLOLOMGWTF!!1!!!cos(0)!1!! I just shot my tube from The Hotel across the map and killed player(C) at the Gatehouse on Karkand in BF2 without knowing where he was.

Player(B): Screenshots or it didn't happen!

Player(A): Here you go, lol pwnd.

Player(C): NO WAI!!
by Nicholas(MoB|Enterprise) April 25, 2007
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If a visual representation was not procured, than the said event never actually occured. (SS can also be used)
Guy 1: Dude, I hooked up with a hot chick!
Guy 2: Screenshot or it didn't happen.
by Wes Jones April 24, 2008
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Used on primarily forums/online games.

The author normally feels inferior because of what OP posted, and so, to regain his pride he asks for a screenshot to prove if the event is true.
fag1: i didn't pirate my games, they're all backups.

fag2: screenshot or it never happened

fag1: i aced TT with only a glock
fag2: screenshot or it never happened

fag1: I JUST BEAT LVL 150 CHAOS WITHOUT USING AI EXPLOITS
fag2: screenshot or it never happened
by bangfish September 22, 2009
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If you're itching to expose a gay person just tell them this... And they will automatically know you screenshotted there gay chat
Brandon : I love this new nail polish
Tyler : Gay screenshot triggered
by Disdudeheregotem August 12, 2017
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When you puke and shit yourself at the same time, out of nervousness or fear. Based on taking a screenshot on a phone, by pressing the power and volume buttons simultaneously.
"I was so nervous on the date, my body took a screenshot! Well almost"
by Levcio May 10, 2022
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When your friend says something gay and your itching to expose them just type "Gay screenshot triggered" in their chat
by Disdudeheregotem August 12, 2017
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All this means is. You get scared and you freeze for a second.

You see something scary and you freeze, when something scary happens fast and you freeze for a second until you react
oh my gawd, Bro my body took a screenshot, that bitch is scary. Danm
by WhOsToLeMyBluEsHaRpIe March 10, 2021
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