I’m looking for the idiomatic expressions meaning “get lost”
the other day a co-worker said “go kick rocks”
go scratch
take a long walk off a short pier
take a flying leap at a rolling donut
what are some others?
Why don’t you make like a tree… and get out of here? 
Go fly a kite.
The other day I honked at a lady, and then she followed me to the gas station to tell me why she stopped at an intersection with no stop sign. So I just said to her-
“I don’t care, so shut the fuck up and go away”.
Does that count? “Go fly a kite” wouldn’t quite have expressed my emotions, ya know? So what scenario does your question relate to?
Amscray.
Why don’t you go play in traffic?
See you later. Oh wait, you’re the one who’s leaving now. (Add desired emphasis to last word. or “you’re”)
Go pound sand.
Go tell your mother she’s calling you.
Go commit pesticide.
Only one human Captain has ever survived combat with the Minbari fleet. He is behind me. You are in front of me. If you value your lives, be somewhere else.–Delenn
From the best TV show in the world “Prisoner” (Called “Prisoner Cell Block H” elsewhere)
“Drop off, luv”
One of my favourites from Burns & Allen Radio Show
George) Come on Gracie go out with me on Saturday
Gracie) I’d love to George, but I’m expecting a headache
Piss off.
Buzz off.
Don’t let the door hit ya where the good Lord split ya.
Get out of my sight.
Fuck off.
Go play in traffic.
“Go and play tig (tag) with the trains”. (Might not work if you are nowhere near any trains, I suppose.)
“Do you like sex? Do you like travel? Well then, fuck off”
(Haha, look - someone admits to remembering Prisoner Cell Block H! Ah, they don’t make them like that any more. The great days of drama.
IRL? I usually don’t. Or I ask them politely to go away/give me some space/let me be alone.
In my head, or to my friends later? My favorites:
Go pound sand.
Get bent.
Go play in traffic.
Many years of reading hard-boiled detective novels have revealed the following to me:
Walk west 'til your hat floats.
Take a long walk off a short pier.
Put an egg in your shoe and beat it.
Is it even possible to get lost intentionally?
@OP: Wanna go find out?
Nitpick: Long walk ON a short pier. “Off” gives the game away.
Hadaway ’n’ shite.
Thanks all. I didn’t have a particular scenario in mind, just looking for all the creative ways to tell someone to get knotted.
The key is in the very first episode of the first season, in the scene between Locke and Walt. After that, it’s all about the numbers.