Sorry, I forgot to put in my story. The longest smoking I've done was from a Friday morning (wake and bake) until the last roach broken-up and put in the bubbler sunday morning. All told, seven friends and I smoked 2 oz of B.C Buds, which amounted to (as best I remember):

5 Blunts (4 grams per)

4 Joints (2 grams per)

14 Bowls (1 gram per)

2 Roach Blunts (5 grams per + 2 grams roach weed)

Gravity Bong - 4 grams

The most stoned I've ever been. Felt like I was spaced out for days after !