Green’s Dictionary of Slang

scamper v.

to run, to run off.

1688		T. Shadwell Squire of Alsatia I i: Captain Hackum: I am ready to give you satisfaction: Lugg out; come you Putt: I’ll make you Scamper.
c.1698		B.E. Dict. Canting Crew n.p.: Scamper, to run away, or Scowre off, either from Justice, as Thieves, Debtors, Criminals, that are pursued; or from ill fortune, as Soldiers that are repulsed or worsted.
1725		New Canting Dict. [as cit. c.1698].
1785, 1788, 1796		Grose Classical Dict. of the Vulgar Tongue .
1811		Lex. Balatronicum.

SE in slang uses

In compounds

scamper juice (n.)

(US) whisky.

1972		Fond Du Lac (WI) Reporter 13 Oct. 8/3: Saloon keepers called the stuff they pushed across the bars to cowboys whisky. What the cowboys called it, however, was ‘bug juice,’ ‘gut warmer,’ ‘nose paint,’ ‘red eye,’ ‘rotgut,’ ‘scamper juice,’ ‘snake poison’ or ‘tonsil varnish.’.
1998		(con. 1919) Howard Hickson’s Histories 🌐 Out here in the wild and wooly West [...] alcohol sellers went underground. You could still get forty rod, gut warmer, and scamper juice, it just took a little more time and lot more money.