Like the bakers dozen, a drug dealers dozen never means 12. It refers to the fine art of a drug dealer undersupplying quantity.
Phil "I thought you were getting a couple of 6 packs! This is a drug dealers dozen"
Karen "I got thirsty and drank a few. At least you got something"
When your house is littered with empty alcohol bottles and cans.
"You need to take a good hard look in the mirror, you've got House Gout for fucks sake. You should really think about finishing your Degree"
The 5th finger is the art of shaking ones hand while passing on a small package.
Pete "How do we get in the club, it's sold out"
Drew "Slip the bouncer a 5 finger larry. $20 should do"