擦屁股

他每次闖禍都是我幫他擦屁股。

Every time he gets into trouble, I'm the one cleaning up his mess.

這不是我的錯，為什麼要我來擦屁股？

This isn't my fault, why do I have to clean up the mess?

老闆叫我幫同事擦屁股，把他搞砸的案子處理好。

The boss asked me to fix my colleague's mess and handle the project he screwed up.