A: When you are Adsa.
A couple of days ago we bought 2 packs of turkey from the fridge in our local Asda. Both packs were in the same fridge and had identical stickers on saying 'BUY ANY 2 FOR £4' even though they were slightly different prices. When we got home we noticed that the 'multibuy' discount hadn't been applied so we took them back to complain.
The person on the customer services counter and a supervisor both tried to convince us that the offer only applied if we bought 2 identical packs. One pack happened to be 'normal' turkey whilst the other was their healthy range. We tried to explain that the word 'any' meant we should have been allowed to do what we did.
The dictionary at answers.com includes the definition: one or some or every or all without specification. For some reason the people at Asda seemed to be using their own definition and tried to convince us that 'any' meant 'only from the identical range of produce'.