When a developer adds something into their media as canon just because a fandom has theorised it and accepted it as truth before hand.
The name comes from Chapter 290 of My Hero Academia where Dabi is revealed to be Toya Todoroki.
"Hey, did you hear that FNaF 1 canonically happened in 1993?"
"That's 290 syndrome for you, always listening to the theorists"
by junkoenoshima5055 April 4, 2023
Get the 290 Syndrome mug.
A major highway that runs through Worcester, MA that between the hours of 2-6pm on weekdays and sometimes Saturdays really stupid dumbass people meet up to just stop in the middle of a highway from when you first reach Worcester over the lake Quinsigamond until the Grafton Street exit. As soon as people see the “Welcome to Worcester” sign they develop “gas pedal amnesia” and just stop in a moronic sea of brake lights. It is 10x worse on Fridays for whatever reason. It could easily be avoided if people just learned how to drive.
Man #1: Should we take I-290 Worcester to get from Shrewsbury to Auburn this afternoon?

Man #2: No way, I feel like getting there sometime this century and not have to deal with a bunch of morons who can’t drive
by Noraa dude September 25, 2023
Get the I-290 Worcester mug.
A major highway that runs through Worcester, MA that between the hours of 2-6pm on weekdays and sometimes Saturdays really stupid dumbass people meet up to just stop in the middle of a highway from when you first reach Worcester over the lake Quinsigamond until the Grafton Street exit. As soon as people see the “Welcome to Worcester” sign they develop “gas pedal amnesia” and just stop in a moronic sea of brake lights. It is 10x worse on Fridays for whatever reason. It could easily be avoided if people just learned how to drive.
Man #1: Should we take I-290 Worcester to get from Shrewsbury to Auburn this afternoon?

Man #2: No way, I feel like getting there sometime this century and not have to deal with a bunch of morons who can’t drive
by Noraa dude September 25, 2023
Get the I-290 Worcester mug.
The "290 Pose" is an act witch someone is taking a bathroom selfie and runs out of idea's for poses and decides to prop his leg up against the towel rack and makes a dramatic looking face and takes a picture as if everything is normal.
Hey did you see Gino's "290 Pose"?
Everyone's been doing it lately.
by Seth killian June 21, 2014
Get the 290 Pose mug.