from German "Keller" = cellar & "Kind" = kid.
Refers to a person who always sits in their room in darkness, often in front of their computer, and has pale skin.
Person A: I've never seen Fredoutside his house. And dude, have you seen his skin!?
Person B: ikr, he's such a Kellerkind.
The act of taking a fictional characters head off in the game known as "Among Us" while your in game name (IGN) is "Shadaddi" and you are the colour pink
Blue "Pink is sus, he was killering everyone"
Red "Yeah, I don't like Shadaddi"
When a particularly troublesome friend decides to insert angst and Difficult difficult lemon difficult actions into an otherwise peaceful conversation and or group activity.