A dub is slang for, good, win. The word is really from the word win, the first letter in win is W, pronnounced dublle-u. The first 3 letters of that is dub
A way of sayint twenty dollars.
Bro: Ay how much for that cart?
You: Give me dub 5 for it.
Meaning a person won’t do something or is all talk.
You a dub, you ain’t gonna do nothing.
Hood way of saying $20 dollars
Aye lemme get a dub...
Translation: Can I have $20