Correction to previous post

My apologies to all the Superman fans out there. I am told I mischaracterized Superman's super powers in my previous post. I now know that Superman has "x-ray vision" not "Superman vision."

According to the highly reputable internet site Wikipedia, lead is "the only known substance that Superman cannot see through with his x-ray vision." Perhaps this explains the use of lead paint on walls in the past?

Note to Michael: Your Superman pillowcase is folded and in the linen closet.