30 sack Share definition Flag A baggie with $30 worth of weed...AKA a dime ($10 worth of weed) and a dub ($20 worth of weed, dub=double dime) combined. "I gave the dude $30 and he gave me a damn dub instead of a 30 sack" 30 sack by PackThePipe October 16, 2008 0 0 Get merch Get the 30 sack mug. Buy Now — $32.95 See more merch