BIYYTOTIWYETIW(But it's you you're the one that I want, you, everything that I want) is from Tomorrow x Together's song "Blue Hour." This is used as a way of telling someone you like him/her.
Someone whose sole function at a company is to build the code that other people write. They must be available 24/7 to do what the actual engineers tell them. This includes 1am on Saturday.
Someone (typically a child) who becomes completely obsessed with prototype material surrounding a video game and will blindly prefer broken prerelease builds of games over the final product just because they're different to what they've become used to.
Person 1: Wow! This 3D model of a turd hadn't been textured yet in this build!
Person 2: Yeah it's a good thing they fixed that before releasing the game.
Person 1: Better? It looked better without the textures!