I posted “'Silent' (to adults) Ring Tone” the other day, talking about a ring tone the teens are using that the adults cannot hear.
I found an MP3 of the ringtone on NPR: http://download.npr.org/anon.npr-mp3/atc/atc_teenbuzz.mp3.
I can hear it, in fact, it's quite annoying.
Maybe, maybe, maybe .. we (adults) tell our kids we can't hear it.
:: cackle ::