This is an old one...

[Barry]

Back when gas stations had full service; a lady pulled into a station, went up to the attendant and said, "Excuse me, do you have a restroom?"
The attendant thought she said wisk broom and he said, "no ma'm, but if you want to back it over here I could probably blow it out with the air hose." 

Barry

[Russ C]

Eeeeeeeuuuuuuuuuuwwwwwww.LOL 

[Rightarm]

    I remember working in my uncles gas staion back in the 70's. An old lady driving a caddy pulls in. I asked, " Can I pump Eythal"? Her reply was "Honey, I am Eythal". Being an 18 y/o kid. The only thing I could come up with was, "Well then can I check your oil"? Dave

[GrayBeard]

AHHHH Dave!

Did you wipe the 'dipstick' carefully?

[cherie]

I see you guys here have more than saw dust on your minds.  LOL