refilling

putting in gas
putting in gas
putting in gas
Ok so I remember once upon a time my daddy told me never to put gas in when they are 'refilling the tanks.' My father was a wise man, so I did as I was told and didn't ask questions. Now as an 'adult' I think to myself, I never really looked into it any further....is this still true? Why did I never ask my dad why? lol