Not sure but it sometimes stops the flow of oxygen to the fire, eventually extinguishing it.
If your on fire you stop drop and roll
stop drop & roll
stop, drop, and roll
Stop,drop,roll
Stop, Drop, and Roll
Stop, drop, and roll!!!
Stop, Drop , and Roll
You stop drop and roll
STOP, DROP, AND ROLL until the fire is out of your clothing.
Stop, Drop, and Roll. or Run/Walk quickly away from the fire.
Stop, drop and roll! -No, that's if you are on fire: In an earthquake, it's stop, drop, and COVER.
Stop whatever you are doing, then lie on the floor and roll till the fire is out.