1st day on the job

On my first day at the gas station, I watched a coworker
measure the level of gasoline in the underground tanks by
lowering a giant measuring stick down into them.

'What would happen if I threw a lit match into the hole?'
I joked.

'It would go out,' he replied very matter-of-factly.

'Really?' I asked, surprised to hear that. 'Is there a
safety device that would extinguish it before the fumes
ignited?'

'No,' my coworker continued. 'The force from the explosion
would blow out the match.'"