Serving a customer earlier,

"Big Mac meal with a coke please."

I got a mouthful off him when I asked if his Big Mac meal was large,

"Whenever I order anything from you, you always try to sell up!!!"

Two reasons for this,

1. The vast majority of customers are not very clear in what they want, they simply say "Big Mac meal". I respect my staff but don't expect them to be psychic, so by being so vague you are directly prompting us to start the whole process of endless questions.

2. If we simply put a medium size meal through and suddenly you decide that you want it large, it is a complete pain in the arse to change it!

Don't like it, fair enough: I hate going to Subway because of the bloody questions: be clear and concse in the first place and you won't get loads of questions and prompting.

As an aside, yes McDonald's staff are prompted to sell up, it is a business just like any other after all. But we are instructed to not sell up to children or vulnerable members of the community (an ambiguous term I know, dontcha just love PC) as it is simply not ethical.