Box of shame?

Apparently the "Box of Shame" is a thing from Despicable Me. I saw the film, but I don't remember the box.

Anyway, I'm not sure how Nina and Isabel ended up in "Box of Shame #2" when they went to Anneliese's Despicable Me-themed birthday party.  Is this their second shaming experience?  Or does the "#2" suggest their shame is second-degree in nature? Or were there so many shameful things going on at this party  that the adults just didn't have enough boxes to keep the misbehaving girls in?  Just how many Boxes of Shame are there?  The picture doesn't tell us.

Anyway, based on the brazen smiles evident in this photo Isabel's mother sent us, I gather that the girls were neither traumatized by the experience nor particularly troubled by the behavior that brought them there.

Life goes on.