Correct

擦屁股

/ cā pì gǔ / 
Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/擦屁股-Chinese-idioms-Cchatty-69f07254-0b31-460d-8fd4-eee4ff0e4c80-1612777386.jpg

Collocation

1
做擦屁股的事
2
帮……擦屁股
3
替……擦屁股

Definition

擦屁股

Literally means:

clean up the mess

Actually means:

finish the work left

It means finishing the work left by others, usually the part that is difficult to handle.

It connotes a sense of criticism or scolding. Derogatory.

处理某人或某些工作遗留下的不好收拾的事情。

常含有批评、指责的意味。含贬义。

Example

Used as predicate or attributive. (作谓语、定语)
1
Tā
他
zuò
做
shìqíng
事情
zǒngshì
总是
bù
不
rènzhēn
认真
  
,
měi
每
zuò
做
yī
一
jiàn
件
shìqing
事情
  
,
zǒng
总
yào
要
liúxià
留下
hěnduō
很多
wèntí
问题
  
,
zuìhòu
最后
ràng
让
biéren
别人
bāng
帮
zhāo
着
cāpìgu
擦屁股
  
。

He always does things not seriously, every thing he does, always leave a lot of problems, and finally let others help wipe the ass.

2
Yǒuxiē
有些
yǎnyuán
演员
míngxīng
明星
shuōhuà
说话
zuòshì
做事
bù
不
kǎolǜ
考虑
hòuguǒ
后果
  
,
fàn
犯
le
了
cuòwù
错误
  
,
ràng
让
tāmen
他们
de
的
jīngjì
经纪
gōngsī
公司
tì
替
tāmen
他们
cā
擦
pìgu
屁股
  
。

Some actors and stars talk about the consequences and make mistakes by having their agencies wipe their asses for them.

3
Tā
他
liúxià
留下
zhège
这个
làntānzi
烂摊子
yīzǒuliǎoshì
一走了事
  
,
cā
擦
pìgu
屁股
de
的
shì
事
shuí
谁
lái
来
zuò
做
  
?

He left this mess gone, who's going to do the shit?