Being from out of the country I guess you can't be faulted for not knowing about putting ketchup on a hot dog when in Chicago, but the vendor was absolutely wrong in getting you some. He should've told you in no uncertain terms to get it yourself, and I wouldn't be surprised if he was fired after the game for aiding and abetting such egregious behavior.Buddy of mine and myself went to a White Sox Vs Yankees game in Chicago many many years ago and being from Canada when the vendor came down the aisle we ordered a couple hot dogs. My buddy asked the vendor “do you have any ketchup?“ The vendor said “ya man no problem I can run in and get you some”.... Well for the next 3 innings the whole section and sections around us were chanting “Ketchup...Ketchup...Ketchup...!”
Just because he said “ya man no problem I can run in and get you some,”but the vendor was absolutely wrong in getting you some.