What/whatever somebody says, goes
Definition 1 of 2
Pro Tip 1/3Hierarchy Emphasis
Used to reinforce that someone in authority has the final say in a matter. 
In the military, what the general says, goes.
Pro Tip 2/3Compliance Required
Implies that objections to the person's decisions are not welcome or considered. 
During the game, what the referee says, goes.
Pro Tip 3/3Not Democratic
Highlights a situation where there is little or no room for group input or debate. 
On this ship, what the captain says, goes.