blue light special

woke up at 4am and decided to have a glass of water. as i downed the glass, a strange blue light blinked at me. seemed to be coming from the tap itself. was it a sign? i must have imagined it. just as i was about to turn around again, it flashed again. freaky voo doo. maybe there was a prankster in our alleyway beaming spy cams into the place. turns out that light goes off when the filter needs to be changed. perfectly logical. and here i was thinking aliens were sending me a message.