Someone who is so high on methamphetamines,tweekin' that you can tell that they are from a long distance. Like a ray of light from a beacon. Flailed out so bad that small children ask their parents "Whats wrong with that man/women?"
Oh my god look at that chick with the scabs on her face having her shopping cart flipped on it's side trying to fix the wheel. I can tell she's so spun cuz she's a tweekin beacon.