When my BF, Bob, was a child, his parents took him and his brother on a vacation to England. They took the ferry/boat to Newcastle, and upon arrival Bobs mom took him and his brother and walked off while their dad got the car and drove. They where supposed to meet on shore.
Naturally Mom and two boys (11 and 7) where asked for their passports, at which point mom (who is terrible at English, and get's really nervous very fast) realized that her husband had walked off with all of the passports. Bobs mom also looks a LOT younger than her age, always has, and had Bob when she was 17, so trust me when I say she looked way to young to have two kids aged 11 and 7. This combined with her non-existing English skills, profuse stammering, and sweaty panicked look made the authorities suspect she was a babysitter who'd kidnapped the two boys. They where about to separate them and call the police, when dad waltzes in wondering what the holdup was...
Poor Bobs mom, she never got over the embarrassment of almost being arrested for kidnapping her own kids. She blushes fiercely red when talking about it 20-something years later.