i dont know.... i can hit the biggest bong you can pass me, and i wont puke... you can hand me 3 or 4 beers, and ill chug them stait down, with out hardly a breath inbetween, and not puke... hell... i can take a bong rip, and then drink as much beer as i want... but i cant smoke and drink at the same time... and i cant smoke after drinking, and neither can my sister, and neither can my dad... but we are all a big smoking, and drinking family...