bubble, n.⁵ — Green’s Dictionary of Slang

bubble n.⁵

[bubble and squeak n.²; note the intensified archbubble, although this is poss. a nonce-coinage in Cook (1962)]

a Greek.

1962		R. Cook Crust on its Uppers 20: All the best Anglo-Saxon grafters come from mine [i.e. school] and the Bubbles and Indians from the other. [Ibid.] 22: The Archbubble got a kosher law degree.
1989		J. Morton Lowspeak.
1992		I. Rankin Wolfman 69: ‘I’ve seen a lot of bubbles coming out of it.’ [...] ‘Bubble and squeak,’ he said. Then a pause. ‘Greeks, right?’.