It's the first swiss word you learn, because it's so hard to say for non-swiss. It means kitchen cupboard.
When a guy from switzerland walks through a cheap shopping street in any foreign country (by example egypt or mexico), the seller says following:
Seller: hey are you swiss?
Swiss dude: erm yes
Seller: Kukikaestley
Swiss dude: Yes i know that word, but it's pronounced different.
Seller: Kuchikästlee, Kuchichästli
Swiss dude: Yes, correct (and walks away to the next seller that "has been to Switzerland")
literally means the act of clamping your teeth but is used to refer to both aggression or a sudden rush of affection (cute aggression) that may make you want to squeeze someone.
A "human" that spends so much time playing video games that their posture is level nerd neck. Everytime anyone goes tryhard they hunch down and their neck gets longer there fore a nerd neck is always hunched down cause they're always going try hard. In other words a nerd neck is a try hard, since their neck is 100% longer than the average human being due to playing too many video games and taking them serious, nerd necks are not even considered human anymore but something more sad. Nerd necks are often found on fortnite, their natural habitat usually being tilted towers.