Met a lady who told me about her husbands attempt to clear a toilet. Seems their dog liked to pick up dog toys and drop them in the toilet. Last weekend they flushed the toilet and something was lodged in it. After chemical drain openers and a 15' X 3/8 snake her husband gave up and pulled the toilet and brought it into the garage to work on. Looking he found the dogs round squezee toy stuck in the trapway. He tried all kinds of things to get it and came upon the idea that he would pour a small amount of gasoline in the trapway and light it so it would melt the toy and they could get it out. So he poured and lit the gas.BOOM The toilet bowl exploded into fragments all over the garage.