You shouldn't have a flashing porch light because it's annoying.
Tim is decorating for Halloween, and he notices that his decorations look nice but are similar to what he sees on other houses.
Tim wants to make his house stand out when people pass by.
Bill buys a few more strands of lights and creates a spider web effect with them in a creative way.
Bill installs a powerful strobe light in place of his normal porch light, streaming a powerful, pulsing ray of light out into the night.
Some of Bill's neighbors compliment his use of light and Bill is happy that he has created something unique.
Everyone with a direct view of the light is highly irritated by it and it becomes a distraction for passing motorists, creating a safety hazard.