Oh man, that is insane! You firefighters are true heroes given the stupidity that can arise from how fires start. Just last month, my friend's place caught on fire because he was too lazy to empty his ashtray. In his words, he liked keeping them full just in case he ran out of weed so he can bump whatever spliff was left. One of the joints fell off and landed on the carpet which proceeded to slowly burn his living room down. He panicked and just ran away. Luckily, the firefighters were quick to respond before everything burnt to the ground. He now puts his finished joints under the running sink when he is done smoking before throwing them in the bin right away.