Source : WordNet®

bozo
     n 1: a man who is a stupid incompetent fool [syn: {fathead}, {goof},
           {goofball}, {jackass}, {goose}, {cuckoo}, {twat}, {zany}]
     2: an informal term for a youth or man; "a nice guy"; "the
        guy's only doing it for some doll" [syn: {guy}, {cat}, {hombre}]