Confused TikTokers are finding rusty razor blades behind their mirrors

My parent's house had these but they actually said razor blades above the little slots It was actually embossed in the metal of the cabinet

Yes, there is a slot in my medicine cabinet and I have used it for many years

medicine cabinet razor blade slot We still have the original medicine cabinet in one of our bathrooms, it has a little slot for the razor blades Our wall is probably full!

medicine cabinet razor slot so where do all those used razor blades go? in the bottom of the wall! and they wait there until some poor future remodeler decides to