胖子

In a sentence

• 那个小胖子很可爱。

  That little chubby person is very cute.

  Here, '胖子' is used as a noun to affectionately describe 'a chubby person', particularly a child.

• 作为胖子，我认为健康饮食很重要。

  As a chubby person, I believe healthy eating is very important.

  In this sentence, '胖子' is used neutrally as a self-referential noun to describe someone who is chubby.

• 他总被朋友们叫胖子，但他并不介意。

  He is always called 'chubby' by his friends, but he doesn't mind.

  Here, '胖子' serves as a nickname used by friends, demonstrating its usage in colloquial language where it may hold a certain degree of endearment or teasing depending on context.