I grew up in Germany (this was the 80s) and one way my dad encouraged us to learn English was subscriptions to various US magazines, one of them was Mad Magazin

I grew up in Germany (this was the 80s) and one way my dad encouraged us to learn English was subscriptions to various US magazines, one of them was Mad Magazine. We loved it even though we missed a few cultural references. The fold in was great but I have to admit, every issue the "Fold back so A meets B" instructions somehow created the wrong image in my head and I'd go, "wait, fold which one where?". Over and over.