Actually I regard it a a BLOODY STUPID TRICK!
I was once relaxing at a party when some pissed up twat decided to set fire to my shoe laces. I was not aware of what was being done until another person spotted that my trousers were alight. Luckily they were quickly extinguished with beer.
If my trousers had been nylon and not cotton they could have gone up in seconds producing serious burns. I do not find it at all funny. Burning plastic is not something that I would like to have to put out with my fingers.
There is a big difference between somebody doing something to show off where they are the person who might get hurt (which is what I assumed the thread was about) and some stupid pillock destroying another person's property (even if it is just a shoe lace - where do you get a replacement in the middle of the night?) in a manner likely to cause possible injury!
Definitely Not Amused.
Quack!
Geoff.