Toys are supposed to be fun and exciting for children, while some are also educational, but a few products aimed at kids have caused a wave of confusion among adults.

Unsuspecting moms and dads—and even one aunt—have discovered that children’s playthings can leave grown-ups scratching their heads. From a bank door that never opens to a “U” symbol no one can decipher, these kids’ toys and learning aids have turned into baffling design mysteries.

Here are five times what seemed like a harmless toy turned into a puzzling moment online.

Baffled by a Bank Door

A parent bought a Montessori-style playset for toddlers featuring several shops (apple, orange, bookshop, bank) where every door opens easily… except the bank door, which was permanently sealed shut.

After being unable to open the sm

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