I would almost be willing to bet money that this is exactly what's the deal with the box of wine.. Here's a couple reasons why..
Take a look at the video and focus on the male's demeanor and body language.. IMO there is an awkward, insecurity that I am seeing.. I guess I'll go ahead and admit that in my early college days that I was a bad girl and on occasion had a person(usually acquaintAnce, or older fam member of a friend) of age that I had purchase booze for us.. And when I saw this younger male's demeanor and body language this is exactly and immediately where my mind went.. My being in his exact position with that person inside the store when they were purchasing the booze for us underagers.. And my feeling uncomfortable, nervous, awkward.. I mean it is breaking the law no matter how ya look at it and I remember feeling just like it "appeared" this young guy was feeling..
Another reason that IMO points directly to Deb having purchased this wine for the young male is what we all noticed in her giving the guy the change.. It was his money she was paying for the wine with and therefor his change she handed him..
A couple of people asked why would he have not been carrying the booze and her the baby items if indeed the wine was purchased for him?? Huge, huge No No!! Even after the deed is done, meaning it's been bought and paid for you're still not in the clear as being underage to just grab your booze and exit the store.. I've seen a few morons do just that and were flat busted before ever even leaving the premisis for making the mistake of letting the underage person grab or carry the already purchased booze.. So, in knowing this Deb would have had to have been the one to carry the box of wine out of the store and likely out of the sight of any peering eyes just to be safe about it..
So, IMO that is what I truly think is the situation here.. Thats what it certainly appears to be IMO..