On a few occasions I've been outside and seen a paticular light on or in someones house flashing. For example, several years ago I went to visit my husband when we both still lived with our parents. I was outside in my car waiting for him to get home from work when a light in the window of the house across the street started going on and off on and off. Right after that at a house down the street an outside light started flashing on, off, on off. I think a third house did it as well. Tonight I was pulling in the driveway and noticed that a few houses down an outside light was doing the same thing. I've seen this happen a few other times too and I always get a strange feeling. I've tried googling omens but can find nothing about it. Would any of you guys know?