the best thing to do with a whipped cream can is to put a balloon on the dispensser and put it thigh so the gas goes into it and inhale, exhale a couple of times ... but I think it's not worth the price you pay it last 2 3 minutes macian just don't worry about that you could take all the cans if you wanted too haha
yea have fun if you inhale and exhale more you'll be higher but you have to breath hard so the ballon expend with the gas and inhale it after you'll probably fall on the ground and have a good time trying to walk for one minute it's funny ... look at yourself in a mirror you will laugh for 5 minutes non-stop