Green’s Dictionary of Slang

the state of pregnancy, usu. in phrs. e.g. in the pudding club adj., pregnant; put in the pudding club v., to make pregnant; join the pudding club v., to become pregnant.

1890–1904		Farmer & Henley Sl. and Its Analogues.
1936		J. Curtis Gilt Kid 38: All I ask is that you don’t tell me that you’re a clergyman’s daughter or that you were put in the pudden club by the squire’s son.
1954		(con. 1940s) T.A.G. Hungerford Sowers of the Wind 160: His sheila’s in the pudding club.
1961		(con. c.1950) R. Poole London E1 (2012) 313: ‘Then ’e put Maisie in the pudd’n club agen’.
1965		L. Dunne Goodbye to The Hill (1966) 8: By the age of ten you knew all about puddin’ clubs and doses of the pox.
1976		D. Ireland Glass Canoe (1982) 156: Me in the pudding club? They’re bloody mad.
1977		J. Rosenthal Spend, Spend, Spend Scene 63: I was in the pudding club again, wasn’t I?
1987		(con. 1920s) L. Redmond Emerald Square 88: She had five kids now and was in the puddin’ club again.
1989		T. Blacker Fixx 249: That month dedicated to Operation Pudding Club had played merry hell with my schedule.
1993		K. Lette Foetal Attraction (1994) 133: She was a ‘woman in trouble’. ‘In the pudding club.’.