Did you know that if you fill a glass bottle with flammable liquid and stuff a rag in the bottle's mouth then saturate the rag by shaking/inverting you can make a device called a "molotov cocktail" and if you ignite the end of the saturated rag and throw the bottle hard enough to smash on whatever you threw it at you have a good chance of lighting that thing on fire

This is in no way related to your comment I just shared it as a scientific curiosity