The wheel that squeaks the loudest
Is the one that gets the grease.

The line observes a social dynamic: those who make the most noise—complain, demand, or publicize their needs—tend to receive help or concessions first. On one level it’s pragmatic advice about advocacy: if you want action, you must speak up. On another, it’s a wry critique of systems that respond more readily to pressure than to fairness, rewarding the most insistent rather than the most deserving. The metaphor of a wheel suggests an organization or community as a machine: maintenance (attention, resources) goes to the part that disrupts smooth operation, so “squeaking” becomes a strategy for being noticed.

The squeaky wheel gets the grease.
The wheel that squeaks loudest gets the grease.
The squeaking wheel gets the grease.