Something I failed to think about when putting 3 clocks on my wall was the "triple tick" I hear all day every day. "Duh," may be a word you had come to mind, but I didn't realize this until they were up. There are times when I am sitting on my couch and I would swear on my life, that one of them is ticking louder and louder by the second.
But maybe that's just my biological clock. (ba-dum-ching!)