Locks on refrigerator?

I’ve been to several of my friends houses and noticed their parents keep locks on the refrigerator or a “keep out” sign on the door. To me this is so odd.. I’ve never had that in my household growing up and it definitely rubs me the wrong way.

I understand maybe money being an issue and trying to make the food last but I mean damn... if it’s that bad I feel you should attempt to get assistance.

A lot of my friends families don’t even cook meals regularly. Most of my friends ate lunch at school and came home to nothing to eat. But when I ask them about it, they just shrug it off as normal to them, as if they’re just accustomed to it now.

How do you all feel about it?