the same in texas, you start using that slang for amount you want to spend and their assuming its the imported brick weed.
BRICK WEED: weed that has been commercially grown, and compressed into standard 'kilo bricks' for transport across the border. comes in bulk and is hella cheap.
around here homegrown/dro is bought by the gram. not the amount. we dont have a regulated system here in texas seeing as its still illegal, so our high quality buds are marketed at different prices. examples : some random "lemon' dro, $20/g...some name brand 'diesel',$25-30g.
THUS, it ould be ineffectiate for some one to want a dub of dro when dro around here hardly costs 20$ everytime.
BUT, a dub of brick weed is always 8grams. so ya. a gram is a gram and a dub is 8grams of low grade where im from. call me wrong or whatever, jsut dont be expecting a gram of dro when you order a dub in Tx.