Consider yourself told

As I was scrolling through the morning emails, I got one from my mom about what's on the end of my box of aluminum foil. I checked it out and found it to be true.

I never knew there were these handy little notches that pushed in to lock the rolls into the boxes and keep them secure when I was ripping off the stuff. Surely I can't be the only one who didn't know about this handy bit of information.