umm.. up on the pump, it says what kind of fuel you are getting. common sense dictates that you don't grab a nozzle under a sign that says "Diesel" and expect 87 octane gasoline. also, i've noticed that the diesel pumps tend to be kind of segregated from the rest of them, and the hose is usually a LOT longer. plus, as i already said, it says "DIESEL" on the pump. and the handle tends to be a little more "slimy" from the DIESEL fuel that gets pumped out of it, and has that "DIESEL" smell that just won't go away, no matter how many times you wash your hands or what you wash them with..
not trying to be mean or anything, but, man, if you can't read the gas pumps, should you really be allowed on the road? same with the person that filled their engine with water. that's just stupid, no matter how you look at it.
you don't plan sincerity.
you have to make it up on the spot.
wanna hear about 20 years ago when i was too smart to know any better?