I just checked out the bit on nitrous on Erowid.com. They said that you can get whippets at kitchen supply stores. Where can you get crackers? Can you put a whippet in a whipped cream dispenser and use it to fill balloons or do you need a "cracker". If you do need a cracker where can you get them? Also on average how many whippets does it take to fill a balloon?
goto any 'culture store' that sells pipes, grinders, and other such things. they sell those things. if they dont know what a 'cracker' is then just drescribe it as much as posible without saying nitrous (the ones around me have to through you out if you mention drug use) nitrous is fun, did it just for the exp. when you shoot a large hit up, stand up really fast and they say something really funny. It changes your voice alot and you get a neat buzz from standing.