To leave in a hurry/ a hasty departure

Any input please on the origins of

1. bug out for the dugout ( late 50's beat? )
2. vamoose ( Spanish perhaps? )
3. split ( 60's hip? )
Any additional words and phrases of similar meaning would be appreciated.

I'll look in my youth slang books this evening. How about:

Beat feet.
Beat cheeks.
Heel-toe it.
Make like an egg and beat it.
Make like a tree and leave.

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