A fun game where you hide your face behind your hands, then surprise someone by showing your face and saying 'peek-a-boo!'
This comes from 'peek' (to look quickly) and 'boo' (a surprise sound).
Peek-a-boo is baby's favorite magic trick! When you hide your face and then pop out with a big smile, babies think you disappeared and came back - it makes them laugh and laugh!
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