Traumatic Sleep Injury, or TSI, is when you wake up with an unknown injury that occured while one sleeps or is passed out.
Zeke: "Hey Kelly why are you limping?"

Kelly: "I don't know, I woke up with a sore knee."

Zeke: "Classic Traumatic Sleep Injury, you need one bourbon, one scotch, and one beer."
by Zulu Bravo January 30, 2014
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The act of injuring one's self while attempting to demonstrate how someone would get a spinal injury.
Doc: We've got another Adam's injury in the ER

Nurse: What a dick head
by Pseudo Paramedic June 13, 2017
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Who would've known that Alex's Knee Injury came with an announcement and a gender reveal
by Tobinho October 26, 2019
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Hollow Knight: Moth damn it I got a head injury.
Hornet: You good?
Hollow Knight: No.
by Blarshtabyangthoh February 10, 2021
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The Injury Theory is a theory states that you should let your child or animal do something and get a injury so that way they will learn to not do that action again.
(Guy 1): I use the Injury Theory with my child to make them learn things
(Guy 2): i moniter my child closely
by SleepyKade April 5, 2021
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An injury suffered usually by an older person who has hurt themselves by flailing their limbs and hitting objects while playing wii.
My brother hit the glass windows twice today and got a wii injury while playing Lego star wars.
by ohbrother April 22, 2009
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An injury (usually very minor) that a star or important player sustains right before or during a big game. This usually occurs when the player knows that they have no chance of winning and decides to save face. This allows these players to say things like "We would have won if I played" or "We only lost because I was injured" further protecting their reputation.
Joe: Did you hear, Lebron cant play in game four of the NBA Championships, he injured his big toe.

RJ: Haha, thats such a Choke Injury, he knows that the Lakers are just going to win tonight and end the series in a sweep.
by TheGoat21 October 26, 2009
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