I have black and white, but wear no clothes, I fall in lines, as everyone knows. With a single push, a chain reaction starts, Connecting numbers, playing many parts. What am I?

I have many masters, both highborn and low A king, a page, and others you'd know Some would shred me and grab my long neck Who would turn me into a wreck

What time is it when you see cows sleeping in a field?

If you take off my first letter I am a pronoun for a guy. If you take off both first and last I am a short way to say hello. My first letter is the fourth from the end of the access. I am a flight of fancy!

You can fiddle it, it's not a device. Bent or straight, it depends how you hold it. Don't fiddle in public, it's impolite. As you grow you stop sucking on it.