Informal term for a silly or foolish person.
Aunque a veces parezca un bozo, tiene un gran corazón y siempre está dispuesto a ayudar a los demás.
Although he may sometimes seem like a fool, he has a big heart and is always willing to help others.
No seas bozo, piensa bien antes de tomar una decisión tan importante.
Don't be a fool, think carefully before making such an important decision.