get a thick ear
To be disciplined by being hit. Typically used hypothetically. Primarily heard in UK. I'll get a thick ear from Mom if she finds out I broke her antique vase.
give (one) a thick ear
To discipline one, typically a child, by hitting them. Primarily heard in UK. Mom will give me a thick ear if she finds out that I broke her antique vase.
give somebody/get a thick ˈear
(British English, informal) hit somebody/be hit on the side of the head, as a punishment: If you don’t behave yourself you’ll get a thick ear.