What is the Pudding Club?
Being in the Pudding Club is a British old fashioned way of saying being pregnant.
The origin is not completely clear; there are potentially two descriptions of where ‘Being in the pudding club’ came from:
1. Pudding is an ‘affectionate’ term to describe a woman who later in pregnancy has a belly that looks like a big round pudding.
2. Pudding is a 17th Century term that was used to describe coitus (more here).
It is thought to be a slang term, possibly from London, which became ‘Up the Duff’ (Duff is a stiff flour steamed or boiled pudding).