take a long walk on a short pier
To go away and leave one alone because what is being done or said is very irritating. Often used as an imperative. (A less common variant on the phrase "take a walk off a short pier.") A: "The experiment might work better if you actually knew what you were supposed to be mixing together." B: "You know what, Jenny? Why don't you take a long walk on a short pier?"
take a long walk off a short pier
Go away and leave me alone. What you are doing or saying is really irritating. I'm really tired of your constant criticisms. Why don't you take a long walk off a short pier?
Take a long walk off a short pier.
and Go play in the traffic.Inf. Get out of here!; Go do something that will get you permanently out of here! Get out of here! Take a long walk off a short pier! You bother me. Go play in the traffic.