you're the boss
A thinly veiled threat which means "If you don't do what I want you to do, I will screw you over. But I'm not telling you what I want you to do."
Example:
Jose proceeded to gloat about all the dirt he said on me, and then he kept saying "you're the boss" at me, meaning if I didn't do what he wanted, he'd hurt me somehow.
Jose proceeded to gloat about all the dirt he said on me, and then he kept saying "you're the boss" at me, meaning if I didn't do what he wanted, he'd hurt me somehow.