Reddit reviews 8.9CUFT Helium Kit

and here's the helium

http://www.amazon.com/gp/aw/d/B000WNIXZ4/ref=mp_s_a_1_3?qid=1395148603&sr=8-3&pi=SY200_QL40 one or two of these should be good.

Here you go fucko

RemindMe! 10 years

http://www.amazon.com/Gas-Mask-Canteen-Israeli-Civilian/dp/B0051XJ8BI/ref=pd_sim_indust_9

http://www.amazon.com/Balloon-Time-Helium-Balloons-kit/dp/B000WNIXZ4/ref=sr_1_cc_1?s=hi&ie=UTF8&qid=1324134382&sr=1-1-catcorr


When you put a plastic bag over your head you're exhaling Carbon Dioxide, which you can tell isn't oxygen. Helium is closer to Oxygen and you won't be able to tell you aren't getting enough air. Eventually you just pass out.

I'm sure you would notice your mind drifting slightly, but otherwise you wouldn't FEEL it.