乐子

xià yǔ tiān wǒ men chū bù liǎo mén xià liǎng pán qí yě shì gè lè zi

下雨天我们出不了门，下两盘棋，也是个乐子。

Since we can't go out because of the rain, it's also a fun to play chess.

qǔ lè zi

取乐子

take pleasure

zhǎo lè zi

找乐子

look for fun

nǐ diū liǎn kě rén jia zài qiáo lè zi

你丢脸，可人家在瞧乐子。

You make a fool of yourself and others laugh at you.

zhè ge lè zi kě zhēn yǒu qù

这个乐子可真有趣。

What a hilarious thing!