(excerpt) “Hoots mon” means ‘hey you’ or ‘hey man’, but it is not actually used by Scottish people at all. It is more of a joke word, cliché, or fun take on the Scots language pronunciation.
It is used in popular culture as a stereotypical Scottish phrase used as an interjection, probably invented by non-scots. “Hoot mon” would be closer to an actual phrase used by Scots - “That was a hoot man!”, meaning that was so much fun.
