A phrase stemming from the phenomenon when Markiplier makes a video about a game, and a massive tidal wave of teens and preteens rush to create an awful, cringy fan base.
Five Nights at Freddy's, Baldi's Basics and Bendy and The Ink Machine all fell victim to The Markiplier Effect.
by Clovey Lowey December 2, 2019
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1. Where Markiplier makes his fans go insane every time more than 5 are in one instance together

2. The effect of insanity spreading like wildfire, caused Markiplier induced memes

3. Turning a group of people crazy in a short amount of time
"I think this server has been infected with The Markiplier Effect."
by SnowWolf5552 November 27, 2017
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