the whistle doesn't pull the train

the whistle doesn't pull the train

Being loud and boastful does nothing to actually show or prove your abilities. Have you calculated all the potential financial implications of this new venture? You keep telling me you're some wizard with numbers, but the whistle doesn't pull the train. You say you're way stronger than me, so come on—let's arm wrestle and settle it for good! The whistle doesn't pull the train, buddy!

See also: pull, train, whistle

Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.