True story. Many years ago a guy I knew was riding his motorcycle around one night. He thought he may be low on gas, so pulled into a local station. It was closed, and the lights were out, thus he could not see down into his tank to check his fuel. He needed light to see, so lit a match and held it over the open cap.
BLAMMM!! Blew his a$$ backwards off the bike and set the tank and seat ablaze. Memorable night for him, and all of us.