sramotiti

1. (someone) to disgrace; to shame; to embarrass
   Nemoj da nas sramotiš pred gostima. — Don't embarrass us in front of the guests.
   Takvi navijači sramote ceo klub. — Fans like that disgrace the whole club.
2. (sramotiti se) to disgrace oneself; to make a fool of oneself
   Ne sramoti se, sedi i ćuti. — Don't make a fool of yourself, sit down and be quiet.

The perfective is osramotiti.