noun · A person who has a harsh or unpleasant exterior but is actually kind-hearted or lovable.

他这人就是块臭豆腐，脾气凛冽但心肠最软。

noun · A form of fermented tofu with a strong odor, popular as a snack in East and Southeast Asia.

闻着臭、吃着香是臭豆腐的特点。