Is Harvey's Bristol Cream rhyming slang?
I remember once when I was in Glasgow a Glaswegian spoke to me. I was in a chip shop so unable to run away. I had no idea what he was on about and keep asking him to repeat. Eventually he started jumping up and down shouting about corned beef.
After he'd gone, the chip shop owner (probably Cypriot) translated for me. Apparently the chap had asked me if I'd see St Mirren play that afternoon and unable to get a reply he'd asked, using Glaswegian rhyming slang if I was deaf or deef in Weegie and hence corned beef.
As far as I know only London and Glasgow have rhyming slang.