pony in the barn

barn find

A valuable item recovered from poor storage, such as a suburban garage, farm shed, etc., where it had been more or less forgotten; especially a vintage automobile.

bit by a barn mouse

tipsy; slightly drunk

born in a barn

In a past tense: criticizing the person to whom the phrase is directed for inappropriately, and usually neglectingly, leaving an exterior door or window open, considered ill-mannered.

dog and pony show

Any presentation or display that is overly contrived or intricate, while lacking real substance.

flog a dead pony

To attempt to get more out of something that cannot give more; to attempt to arouse fresh interest in something that is either hopeless or already settled.

not be able to hit the broad side of a barn

To have very poor aim, such as while using firearms or in sports.

one-trick pony

A person or group noteworthy for only a single achievement, skill, or characteristic.

shanks' pony

One's feet or legs, regarded as a means of transport.