Don't be a baichi and fall for that scam.

别做傻瓜，别上那个骗局的当。

He felt like a baichi after making that mistake.

他犯了那个错误后感觉自己像个傻瓜。

She called him a baichi for not understanding the joke.

她因为他不懂那个笑话而叫他傻瓜。

He acted like a baichi when he forgot his own birthday.

他忘记了自己的生日，表现得像个傻瓜。

Only a baichi would leave the door unlocked in this neighborhood.

只有傻瓜才会在这个社区不锁门。