It's all in the Mind You Know

Seagoon: What did this attacker look like?
William: I dunno, I dunno, I didn't see him, mate.
Seagoon: I see. And would you recognise him if you didn't see him again?
William: Straight away! Although you know, sir, I must admit, me eyes ain't what they used to be.
Seagoon: No?
William: No, they used to be me ears.

From the Goon Show, which has a fan site here.