Need a good 'comeback' for..."How do you get that thing..."

[Scott Pope]

In my experience, you can tell from the non-verbals when a person is truly curious and wants to have a discussion rather than smart one liners (then again, in my "former life," my job was to assess the veracity of witnesses on the stand and see if my argument was being well received by the jury). I am happy to discuss bass at the pleasure of the truly interested, but I simply smile and go on at the one-liners.