hurler on the ditch
- (Ireland, idiomatic) A person standing on the side of a hurling field issuing (unsolicited and usually unwanted) instructions to the hurlers.
- (figuratively, Ireland, idiomatic) An opinionated person who offers (unsolicited and often unwanted) advice on the best way to handle a situation.
- The figurative definition is far more common.
opinionated person who offers advice — see back-seat driver