spreading holiday cheer

Driving to get a few last minute gifts, i changed lanes without using my blinker. An traffic offense to be sure but i really wasn't anywhere near the car behind me. I didn't cut anybody off or attempt to squeeze where i didn't belong, i swear. I just forgot my blinker. the lady behind me was well into her 60's and driving a toaster car, um.. the scion? oh yeah, the scion. a horrific looking car if you ask me, but i just might be feeling sour. anyway, so she starts honking at me after i move over and so i wave like, "oh, i'm sorry," to be nice. I really wasn't being crazy. Then she starts flashing her headlights, honking some more and pulls something out and points it at me. it looked like some kind of laser. She is absolutely going nuts. Is it something that records my license plate and can be uploaded to the cops? Is it a gun? what the crap does she keep pointing at me?? I take my exit and she follows me coming up along side my car. She stops even with me and points this thing directly at my HEAD and then points it to the ceiling. she does it over and over while honking her horn. While it's pointing up i finally get a glimpse at it. It's a garage door opener! I guess she was practicing a drive by which means if it had been a gun she would have killed me. HELLO! what a psycho. gangsta grandma. whatever. We finally turned opposite directions and she drove away, my rearview mirror keeping a close eye until she was gone. I know it was just a remote but i had a burning hole in my head all afternoon.