Monday Mystery

Okay, I don't get this:

After our Christmas discussion when all the younger boys couldn't understand the problem here. They said it was an "Eads girl" thing to be so particular about. I could not wrap my brain around it. 

It's very obvious that this is the correct way to "clip" a bag--fold both sides in and roll down. It's not that hard. Really, isn't it obvious? Well, apparently that's not the case for "someone" in our house. And I think you know who that "someone" is this time!! 

So, I guess it's not much of a mystery, but that's all I've got!!