You just have to laugh.

I was carrying a part of another route a while back. A large car pulled up and the passenger asked me" Do you have my check?" I said "I don't know who are you?". He gave his name and said where he lived. I told him I wasn't carrying the mail for that area of town. I explained to him that the route was broken up and several people were delivering it. They drive off in search of another carrier and his check. twenty minutes or so go by and the same car pulls up. Again the passenger asks "Do you have my check?" I'm trying not to laugh as I tell him I am the same guy he asked twenty minutes ago. He says"Oh" and they drive off. I am now driving to another spot on the route . I get out of the truck and low and behold! You guessed it! The same car and the same question "Do you have my check?'. By now I have realized the car load is stoned or on something. So, I leaned toward his window and asked him how many mailmen has he seen today. He says " three". I then ask him how many had funny looking safari hats like mine. He says "all of them".  At that moment the driver blurts out "Yeah! He is the same mailman we kept running in to!!" They finally left  and they didn't find me again!