[pooch]

Just tell the attendant, if you can figure where the gas cap is, YOU can fill it.

If you cannot guess where it is, I do not trust you to fill it.

Also if they do demand to fill it, say that any spillage will run forward down under the hood and onto the exhaust pipe, so you better have good insurance, then step way back ( for effect).

I bet the attendant wil let you do it then.