qí bó zi lā shǐ
lit. to take a dump while riding on sb's shoulders (saying)
fig. to treat sb like garbage
骑
qí
to sit astride
脖
bó
neck
子
zi
noun suffix, as in 椅子[yi3 zi5] "chair"
拉
lā
to pull
屎
shǐ
feces; excrement; a stool