matey boy
When speaking and you don't know someones name in a sentence, you use matey or matey boy instead.
"I spoke to whats his name, matey boy, earlier"
Matey Boi
Someone who acts dangerously on the road. Or a cute nickname for your friend (can be changed/downgraded to Matey Bro/Brother)
You’re such a matey boi!
matey boy
Often used in a derogatory way towards a male who thinks he's smarter than he actually is. You may well know his proper name
"Hold on a wee sec matey boy, when I went to school there were 52 weeks in a year."