腿子

wǒ tuǐ zi fā ruǎn

我腿子发软。

I go weak at the knees.

tǔ háo liè shēn de gǒu tuǐ zi

土豪劣绅的狗腿子

the local bully's henchmen

tè wu tuǐ zi

特务腿子

hired thugs on special assignment