To be fair the first one can also be used as a general insult, a reply to friendly banter or as a retort to an insulting statement or unappreciated viewpoint
- not just a variety of "be quiet"
Source: - 20 years of being Scottish
English
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You're negative 20 years Scot? How does that work?
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It's scots for "~".
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Le epikk troll m80!