Price tags on the items are a pretty clear indicator ...
Are you all saying that the person who purchases the mug is the only one that can I use it? So if I were to purchase it, I couldn't let my wife, brother, cousin, friend use it? Even if I wasn't? Where does it say that? If you buy mugs for your kids, you're the only one that can fill them? Or they can only fill one and not the other mug? They better not get them confused, then. Or even better, I can't get up in the morning and go down and get some lemonade for everyone in my party (with all 4 mugs that we have) because its 'purchaser only'? That is not how it works, nor how it is intended.
:brick: