Green’s Dictionary of Slang

stubble it! excl.

also stubble! stubble the gab! stubble your red rag!
[SE stubble, to clear the land of stubble, to cut it short; gab n.1 /red rag n. (1)]

(UK Und.) hold your tongue! be quiet!

[UK]B.E. Dict. Canting Crew n.p.: Stubble it c. hold your Tongue.
[UK]New Canting Dict. [as cit. c.1698].
[UK]Bailey Universal Etym. Eng. Dict. [as cit. c.1698].
[UK]B.M. Carew Life and Adventures.
[UK]Grose Classical Dict. of the Vulgar Tongue.
[UK]G. Andrewes Dict. Sl. and Cant.
[UK]Lex. Balatronicum.
[UK]Egan Grose’s Classical Dict. of the Vulgar Tongue.
[UK]Lytton Pelham III 292: Stubble it, you ben, you deserve to cly the jerk for your patter.
[US] ‘Scene in a London Flash-Panny’ Matsell Vocabulum 99: ‘Stubble your red rag,’ answered a good-looking young fellow.
[US]Trumble ‘On the Trail’ in Sl. Dict. (1890) 43: [as cit. 1859].
[US]A.H. Lewis Confessions of a Detective 203: ‘Stubble the gab!’ whispered the brute-faced creature who sat across-table from the garrulous yeggman; ‘stubble, and ware the bull!’.