2 onies with hast on top lasted me prob 3ish hours then i start wanting to smoke b4 work. had a cig thou =( always find myself finding for one after the reef. but i never smoke straight up tobacco without weed first.
like budday said. when i first started smoking i could be high for 4 or 5 hours. if i smoked really good weed with my current tolerance, i'd prbably be high for almost 3 hours. but i usually smoke mid grade weed (with a tolerance) and get high for like an hour. two on a wake and bake. but with brians method i can be high for 6 hours