别人牵驴你拔橛子

bié ren qiān lǘ nǐ bá jué zi

lit. someone else stole the donkey; you only pulled up the stake it was tethered to (idiom)

fig. you're the least culpable, but you're the one who gets the blame

bié

to leave; to part (from)

ren

person; people

qiān

to lead along

donkey

you (Note: In Taiwan, 妳 is used to address females, but in mainland China, it is not commonly used. Instead, 你 is used to address both males and females.)

to pull up

jué

a peg

zi

noun suffix, as in 椅子[yi3 zi5] "chair"