facebook poke meaning

What is a "poke" mean on facebook?
My friend (a child) continues to bite me on facebook, which means what? I will not "get" him again if something like his "Think of You" or "I'm good at or want to leave?" U get to where I go to? and thanks for help me ^ _ ^
What this means to put someone on Facebook for now you can wonder what it means to get someone on Facebook, and why you want to send elbow. There are several reasons to send to friends and peers who are not on your list of friends, among them: * Just to say a quick "hello" * To call someone. was awaiting a response or a message from him. * To check and see if this person has visited lately Facebook. * To let someone know you think of it. * If you think you know someone I do not know if this is the right person. A bag is less intrusive than a friend request, and if that person already knows, he or she is looming again. * Just for fun.
FaceBook poked explained (Poke and Peek)