As I understand it the organisation SPICE is about persuading people to do things like jumping off bridges attached to a bit of rubber band, jumping out of aeroplanes tied to a bit of knicker silk and running down mountainfaces holding onto a bit of old rope....... There is another organisation dedicated to persuading people NOT to do stupid things like that - it is called the SAMARITANS and has a phone number in the book!!!!! We like you John - dont do it.......
As for fire eating - use paraffin, it doesn't burn as dangerously as petrol, which can blow back and explode your lung. BUT - make sure you NEVER swallow paraffin. It's medicinal effects are legendary - you can shit through the eye of a needle. I once travelled from Cardiff to London on an Intercity 125 train after learning to fire eat/blow (Cardiff Folk Festival 1999 - Dr.Sunshine's Pavement Show). I swallowed the tiniest amount of paraffin, and burped paraffin all evening. On the train, the following morning, I did not move more than 10 foot from the door to the toilet for the whole journey! Quack! Geoff the Duck!