chepooka, n. — Green’s Dictionary of Slang

chepooka n.

[coined by Anthony Burgess in A Clockwork Orange (1962); ult. Rus. chyepookha, nonsense]

(US teen) nonsense.

1962		A. Burgess Clockwork Orange 2: There were a few starry letters, some of them dating right back to 1960, with ‘My dearest dearest’ in them and all that chepooka, and a keyring and a starry leaky pen.
1999		Clockwork Orange soundtrack [liner notes] So my droogs, if you’re feeling oddy knocky or gloopy or chocked with chepooka, you are invited to sloosh the music of Clockwork and feel horrorshow once more.
2002		weblog [blog] Chepooka: personal nonsense, get a glimpse into my soul if you dare.