a stupid person 笨蛋；蠢驴；傻瓜 He got drunk and made a complete prat of himself. 他喝醉了，出尽了洋相。 You look a right prat in that outfit. 你穿那套衣服看起来真傻。
Word Originmid 16th cent. (originally referring to a person's buttocks): of unknown origin. The current sense dates from the 1960s.