Turing finds American manners peculiar

These Americans have various peculiarities in conversation which catch the ear somehow. Whenever you thank them for anything, they say ‘You’re welcome’. I rather liked it at first, thinking I was welcome, but now I find it comes back like a ball thrown against a wall, and become positively apprehensive.

Alan Turing, quoted in Andrew Hodges, Alan Turing: The Enigma, Centenary Ed. (Princeton: Princeton Univ. Press, 2012), p. 123