se faire marcher sur les pieds

to let people push you around

This expression means to let others take advantage of you or treat you with disrespect, similar to English "to be a doormat."

Il est trop gentil, il se fait toujours marcher sur les pieds par ses collègues.

He's too nice, his colleagues are always walking all over him.

The verb 'marcher sur les pieds de quelqu'un' (to walk on someone's feet) has meant to encroach on someone's territory since the 16th century. The reflexive form 'se faire marcher sur les pieds,' emphasizing the victim's passivity, became common by the late 18th century.