Green’s Dictionary of Slang

chokka adj.

also chocka, chocker, chokker
[SE choc full or chockablock adj.]

1. full to the brim.

[UK]Westmorland Gaz. 11 Sept. 8/5: [from Punch] All England has gone crazy with delight in hearing of it. Bedlam is choke full, JHanwell p’raps is chocker.
[UK]Indep. on Sun. Real Life 11 July 3: The largest and most important island [...] is chocka with rainforests.
[UK]Guardian Guide 26 June–2 July 8: The chart in general is chocka with candyfloss of recent vintage.
[Aus]G. Seal Lingo 92: chock-a-block – full up [...] is usually shortened to chokka, as in the probably apocryphal words of the air-line clerk to the intending passenger sorry, ocker, the fokka’s chokka.
[UK]N. Griffiths Grits 302: The pubs’ll be fuckin chocker.
[US]T. Udo Vatican Bloodbath 108: Double decker buses chocka with gawping tourists.

2. extremely dissatisfied, unhappy, ‘fed up’.

[Aus]Gen 1 Sept. 13/1: When Jenny the Wren is fed up with the world she is ‘chokker’.
[NZ]G. Slatter Gun in My Hand 108: He was terribly unsettled when he came back from the war [...] He used to say he was chokker all the time.
[UK]R. Fabian Anatomy of Crime 95: I’ve had this, Paddy. I’m chokka.
[UK](con. WWII) B. Aldiss Soldier Erect 87: ‘You’re looking proper brassed off, mucker, isn’t he, Taffy?’ ‘Proper chokka.’.
[UK]T. McClenaghan Submariners Ii i: What’s he so chokker about?
[UK](con. WW2) T. Jones Heart of Oak [ebook] Christ, they must be bloody chokka — [...] They must be pissed off being up here with the real bloody war, eh?’.

3. (UK juv.) wonderful, fantastic.

OnLine Dict. of Playground Sl. [Internet] chokker, choc, n. great, wonderful, magic, excellent.