Pariban·(If you're a man), women with the same surname as your mother. (If you're a women), men whose mothers' surname is the same as yours. Has an added implication of being the best pairings for marriage. Batak Toba
Bezzeg·A special word used to convey and emphasize a sentiment/fact which is in oppositon with the statment the word bezzeg is attached to, while not directly mentioning the opposing thing. Often used while berating someone. Examples in text. Hungarian
Myrornas krig (lit. war of the ants)·The b/w noise shown on an analog TV set when not tuned into a channel. Swedish
Söndagsseglare (lit. Sunday sailor)·Someone who is bad at something (e.g. driving a car), usually due to inexperience. Swedish
Uppbrottsstämning (lit. breaking-up mood)·The mood when something is about to end, like a party. Swedish
Disputed Paragrafryttare (lit: article rider)·A person who follows written rules to such a degree that they're seen as rigid and inflexible. Swedish
Disputed Vergüenza ajena·When you're ashamed not because of your own actions but by somebody else's actions. Spanish
Myrornas krig (lit. the war of the ants)·The b/w noise shown on an analog TV set when not tuned into a channel. Swedish
Disputed Preum’s !·Used at the end of a long car ride to determine who will go to the bathroom first. French