I'm sure it seemed like a good idea at the time.

Two Star Wars fans are in a critical condition in hospital after apparently trying to make light sabres by filling fluorescent light tubes with petrol.

A man, aged 20, and a girl of 17 are believed to have been filming a mock duel when they poured fuel into two glass tubes and lit it.

Petrol is metric gasoline. (Except it's measured in litres and costs four times as much.)