If you say that, where are you from? I'd say it while gesturing to indicate the size of something. Lived in Staffordshire half my life, the other half in Oxfordshire. DP also Midlander, says he's never heard anyone else say it. Good friend of mine says it too; she's from Devon but also lived in Oxfordshire for twenty years. Humour me, MNers, and tell me whether you recognise the phrase/if you say it too/where you're from?