You're phone rings and you let it go to voicemail. (yes cellphones have voicemail, too!).

You know what a slide rule is, you know how to use one, and you're able to pull one out of a drawer to show a teenager that you do.

You walk through a department store and hear classical versions of the Rolling Stones, Beatles, The Clash, and Van Halen on the 'Muzak' system.