"I walked to Coed Poeth this morning," I said to Keith later.
"You didn't! You're joking!What on earth did you do that for?" was the reply.
Not really what I was looking for. "Thank you for getting my prescription," would have been more the sort of reaction I was seeking.
"Oh yes, thank you for getting my prescription," he said meekly.
(Anyway it must have been at least half a stone's worth of walking - at least.)