Green’s Dictionary of Slang

1. a bald-headed man or his head; thus bladder-of-lardy adj.

1862		Sydney Mail 1 Nov. 2/4: Goliah Gruff riding, like Johnny Gilpin, with his bald head shining like a bladder of lard.
1864, 1867, 1870		Hotten Sl. Dict.
1883		Dundee Eve. Teleg. 27 Mar. 2/2: His wig had tumbled off and his bald head bobbed gently up and down. Tilbury and a schoolfellow were playing about with pea-shooters. [...] Tilbury shouted to his friend, ‘Let’s have a shot at old Bladder-of lard’.
1886		Athenaeum 31 July 142: An elderly Jew money-lender, whom she afterwards describes to her admiring friends as a bladder of lard, a graceful reference to his baldness and tendency to stoutness .
1895		‘’Arry on Harry’ in Punch 24 Aug. 90/2: These ’ere munchy-mouthed mashers [...] / Carn’t grow any [i.e. hair], not arter thirty, the bladder-o’-lardy scares.
1895		Crowe Aus. Sl. Dict. 9: Bladder of Lard, a bald head.

2. a fat man.

1886		see sense 1.
1898		Folkestone. Hythe Herald 10 Sept. 16/2: [She] spoke of him him in such endearing terms as ‘My old bladder of lard’.
1920		Marvel 4 Sept. 2: Here comes old bladder of lard!
1952		B. MacMahon Children of the Rainbow 127: D’you think or imagine that we’d hould lookin’ at you while you’d be doin’ it, you ugly bladder o’ lard?