This happened to me and I thought it would be good on Seinfeld.
Once, while doing last minute grocery shopping for my son's birthday party I was frantic in the food store...I was throwing things in my cart, left and right..anyway, I'm going aisle to aisle and suddenly I realize I have someone else's shopping cart. I go around looking thru the store for MY CART. I have to go to the manager to get help. He helps me, may have even made an announcement, I forgot...at any rate, I find my cart near the frozen foods. I don't think I put anything in their cart, but I don't know... Does this sound like it would be good on Seinfeld? Maybe they're throwing a surprise bridal shower for Seinfeld's fiance? or something? Let me know! Marcie