Mandi twenty sack Share definition Flag A bag of meth you pay $20 for but is worth about $5. You are lucky if it is even real meth at all. This looks like a Mandi twenty sack. Mandi twenty sack by Kronicle420 May 2, 2019 0 0 Get merch Get the Mandi twenty sack mug. Buy Now — $32.95 See more merch