A word for a fool which was introduced to English from Spanish (bobo=fool) at the beginning of the seventeenth century. A booby is the kind of man who would be caught out by a booby-trap, but the term is often used jokingly, to imply mild silliness...

The boobies are part of the family Sulidae, a group of seabirds closely related to gannets. The true boobies all belong to the genus Sula. These are large birds with long pointed wings and long bills. They hunt fish by diving from a height into the sea...