Why would a guy ask me to use my credit card in exchange for cash at the gas pump?

Working some sort of scam on you... most likely. Likely funny money,

Nothing good comes from stuff like this. I agree with Smoothy. Could be funny money or he may have swiped your card with a scanner. Avoid Scheming Credit Card Scam Artists I'd call my card company and ask for a quick review of charges to that card.

Yes, agree with smooth and Belanger, credit card scam. So what did you do?

Thanks y'all for taking the time to answer my question. I knew there was something wrong with the situation
But could not figure out why someone would want to do this. I barked at the guy and said no in a loud
Tone and he walked away to his car with his buddy. This was late at night and just didn't feel right.
Thanks again...