just thought i would add a recent finding i have found!!
while at davenports a gentleman came in and asked for the "foil trick where it gets hot" but as you say its withdrawn however the fellow behind the counter said about Big red chewing gum as it is cinumum(sorry for spelling) it reactes with sirlivar (spit) and gets hot. so if you take the foil off and lick it, it gets hot therefor if you putit on some ones hand or forhead it will feel like its getting hot.
Darn it! I was just about to post that. Rats. I have tryed this method and I can say it works very well and it gets really quite 'hot' and you eventually have to rip it off coz it is very 'hot' (ps. the gum tastes nice as well!)
