In the game "Dead by Daylight", a player by the name of CJ created a tech, and thus it had been named after him.
To preform a CJ Tech, you need: a pallet, a slugged teammate, and a flashlight. Make sure your teammate is on the side of the pallet that the killer is on, then once the killer tries to kick the pallet, vault it. This will cause them to instead, pick up your teammate, in which case, you can vault back to the other side and get an easy flashlight save.
Search "cj tech" on YouTube to see this visually.
"He's down'd at a pallet, I'm gonna go for the cj tech!"