Comfortable Shoes-- June 10th

What do you do when a man offers you his credit card to purchase his tickets and as you swipe and hand him his receipt to sign,  this gentlemen ask, did you swipe it? And you reply yes. He then asks again no, did you swipe IT?  a emphasis on it with a double raised eyebrow and a wink. What would you're response be? I know it can't be a loud yell of Guard repeatedly till they whisked him away. Nor would it be to tell him to wash his mouth out with soap and act like a civilized man. Maybe you can get away with a confused look . But mostly you simply grin and pretend that he didn't mean what he just said or that you never quite catch that last part and tell him to enjoy his visit. You then proceed to count down the minutes till you can get home under a steaming hot shower to wash the old dirty man away.