hahahahaa, a crafty pipe will smppth all your troubles and put a smile on your face...WIN!
no, i haven't, i've only done it once sat round a mates house in the middle of the afternoon with a beer and a spliff, he filled a ballooon, put some SHITE "trance" music on, pumped it up to deafening levels, and stared at my face while I was puffing on this fuckin ballooon going a bit giddy....
Oh, I have done it before when my wife was in labour, we were at home and the labour was a good 24-26 hours, midwives were coming in from all over Dartmooor/South Devon with fresh canisters for her, think we had about 8 canisters in the end, just seemed to add to the befuddlement for me, one midwife (we had a few turn up in shifts) caught me having a reefer on the back doorstep, kept trying to get my wife to have a spliff as she thought it would do her more good than all the NOS she was huffing......
I can imagine nos is something better if you're already under some influence of something else, just like poppers....