I have an older "friend" who has tanks. he edjumakated in pharmacy nitrous. about 4/5 of us finished a three foot tank in a few hours. for about a week after that I thought I had done permanent damage to the cell phones in my head, the ringing wouldnt stop but I couldnt stop finding it funny.
wow - yeh my new NOS buddy says he can get us a med tank for like $160 or sumthin, thats crazy - i just spent $80 on 6 packs and a tank is like 100 packs