bub
/bʌb
/noun North American informal
An aggressive or rude way of addressing a boy or man: hey, bub, I’m looking for someone...
- If you're already trained up but you could stand a little more - bub, this is for you.
- Let me tell you something, bub: she'll burn in hell along with you, so stop acting so smug!
- Time to read those two hundred and three claims more closely, bub.
Origin
Mid 19th century: from earlier bubby (perhaps a child's form of brother), or from German Bube 'boy'.