Green’s Dictionary of Slang

the female breast, usu. in pl.

1826		R. Morley ‘Flashey Joe’ in Farmer Musa Pedestris (1896) 97: Your panting bubs and glist’ning eye / Just make me love you like the divil.
1860		Hotten Dict. of Modern Sl. etc. (2nd edn).
1870		Cythera’s Hymnal 3: Two such swelling bubs, or breasts.
1881		‘New Year’s Day’ in Pearl Christmas Annual 62: Her bubs were intense, / Her arse was immense, / And her cunt quite too utterly utter!
1888–94		‘Walter’ My Secret Life (1966) VIII 1647: Haven’t I a foine shape [...] there, feel me bubbs — look at my small waist.
1899		Crissie 138: ‘Bubs,’ and nipples too, were therefore very much in evidence.
1922		Joyce Ulysses 61: He looked calmly down on her bulk and between her large soft bubs, sloping within her nightdress like a shegoat’s udder.
1938		B. Breuer Daughter in Legman (1968) I 145: I want a girl with big bubs and plenty to hold onto.
1941		in G. Legman Limerick (1953) 54: The pride of his life / Were the tits of his wife—One real, and one India-rubber bub.
1954		E. Hunter ‘The Beatings’ in Jungle Kids (1967) 134: Her bubs all spilling out the front of her dress.
1965		J. Thompson Texas by the Tail (1994) 165: Studs were always buying rubber bubs [...] so that they could pass for dames.
c.1973		J. Thompson ‘Sunrise at Midnight’ in Fireworks (1988) 184: The twins, Bub-Bub, seem to tug me forward into naughtiness.