Maybe I need to be more direct, as it looks like readers get the impression that your friends have the power to randomly wake you up with their messages? That is not the case and I dont want to use an alarm clock that allowed people to wake me up to messages when they want to. Uggh, that would stink, I want to sleep until the time on my alarm clock goes off!
What's different here is the sound of your alarm clock. INstead of just hearing only a buzzer you hear some sorta of buzzer and then audio messages left from those you allow. THis is only heard after the alarm time you set passes... same principle as a normal alarm clock.
If this is clear to you cool ... though I dont understand your statement, "Kramer would be sleep deprived"