Translation of "know which side (one's) bread is buttered" in Russian

Translations

знать, что к чему; знать, где выгода

He knows which side his bread is buttered on and always sides with his boss.

Он знает, что к чему, и всегда на стороне своего начальника.

Definitions

To be aware of where one's best interests lie or to know who or what provides one with advantages, benefits, or support, and to act accordingly.

Words