I thought the difference was that ladies don't drink pints? No, seriously: well into the 80s, the Market Tavern refused to serve women pints, though you could have two halves if you insisted - which makes it embarrassing that I tend to drink halves (because the quantity suits me, and my hands are a bit small for pint glasses).

You do know why it's Black Sheep, do you? It's either a lovely story or a very clever piece of marketing (or both!).