what (someone) says goes
idiom (1)Definition of what (someone) says goes
(Entry 1 of 2)
: people have to do what (someone) requires or demands
What she says goes. She's the boss.
what someone says goes
idiom (2)Definition of what someone says goes (Entry 2 of 2)
—used to say that everyone else has to do what a person tells them to do She's the boss. What she says goes!