A foolish person or foolish action.
Because sometime they look young but there old and they want to foolish other people.
A foolish person.
foolish (just like how the English word comes from the Portuguese doudo, which means "a foolish person")
It's a foolish person.
rebal
A foolish person
Asinine is a foolish or stupid person
An addlehead is a foolish or dull-witted person.
A rude foolish person.
HALFWIT
A more intelligent person who does not waste his time on such foolish practices.