Green’s Dictionary of Slang

shiny adj.

1. (also shiney) smart, succesful.

[UK] in G.D. Atkin House Scraps 166: The young ’un goes to music-halls, / And does the la-di-da; / We are a shiney family, We are! we are! we are!
[Aus]Sun. Times (Perth) 4 Mar. 4/8: ’E ’ad one of the shinest tarts in Perth.
[Aus]Truth (Sydney) 23 Feb. 5/1: When they're strolling out together, / They do look most tony. Sir; / Quite demure, and werry shiney.

2. (US, also shinny) tipsy.

[UK]Farmer & Henley Sl. and Its Analogues VI 179/1: Shinny (or Shiny), adj. (American).—Drunk.
[US]J.W. Carr ‘Word-List from Hampstead, N.H.’ in DN III iii 199: shiny, adj. Mildly intoxicated. ‘Joe was a little bit shiny to-night.’.
[US]S.E. White Arizona Nights 112: ‘Who’s your woolly friend?’ the shiny Jew asks of the girls.

3. happy.

[UK]Indep. on Sun. Real Life 19 Sept. 5: ‘Shiny’ means happy, he says.

SE in slang uses

In compounds

shiny-bum

see separate entries.

shiny lizard (n.)

a body louse.

[US]L.N. Smith Lingo of No Man’s Lnd 24: COOTE This is a species of lice with extraordinary biting ability [...] also called ‘seam squirrel,’ ‘trouser rabbit’ or ‘shiny lizard’.
shiny ten (n.) [? late 19C, ‘The Shiny Tenth’: the 10th Royal Hussars]

(bingo) the number ten.

[UK]M. Harrison Reported Safe Arrival 83: The two Air Force corporals who ran the Housey-Housey game [...] burst into their esoteric chanting of: ‘Kelley’s Eye ... Shiny Ten’.