3 sentences

1. 这辆车的屁股被撞坏了。

   zhè liàng chē de pì​gu bèi zhuàng​huài le.

   The rear end of this car was smashed.

   Source: Dong Chinese Dictionary

2. 我当时在屁股口袋里装着幸运瓶盖。

   wǒ dāng​shí zài pì​gu kǒu​dài lǐ zhuāng zhe xìng​yùn píng​gài.

   I had my lucky bottle cap in my back pocket.

   Source: OpenSubtitles

3. 他摔了一跤，屁股着地。

   tā shuāi le yī jiāo, pì​gu zháo​dì.

   He fell down and landed on his butt.

   Source: Dong Chinese Dictionary