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The Logan effect is a common acuring phenomenon where a kid can not hear him/herself over the sound of their $100 earphones. Therefore, the sound they create is unheard by them but clearly heard by other people, causing people to become annoyed and frusterated. Despite multiple attempts to tell the person to, “shut the fuck up” the invidual will still maintain a loud voice. But, those suffering become annoyed when other people raise their voice beyond what their earphones block out.
Guy 1 - Omg Terry Shut the FUCK up and stop screaming!

Guy 2 - WHAT WAS THAT!?! I CANT HEAR YOU OVER MY GAME OF OSU

Guy 1 - Omg he has the Logan Effect
via giphy
by Fraser18 June 16, 2018
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It is when you plan on watching only one video on the internet but end up watching more than one.
Friend 1: Dude, watch "I Just Had Sex" by The Lonely Island ft Akon
Friend 2: A'ight
Friend 1: Did you watch it?
Friend 2: Yeah I did, The Lonely Island are life...now I'm re watching all of their stuff.
Friend 1: Ah, The Logan Effect
Friend 2: Now you just making stuff up
*Friend 1 creates an urban dictionary definition*
by shoutouttobean October 10, 2017
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