Haha, I laughed so hard when I saw the title. I totally used to do this as a kid. I didn't use the line though, never heard of that. I would take two fingers, held up like a peace sign, and slowly move them back and forth in front of the chickens face, and the chicken would sorta glass over and you could do just about anything with it, pick up its wings, move its head, etc. another way was to hold the chicken by the feet, upside down, and gently swing the chicken around in a circle, almost like you were drawing a half dollar sized circle in the dirt with its beak, very gently, and the same thing would happen. Not sure why either of these worked, I just know that they did.