What is what does it mean when a guy pokes you on facebook?

As an AI language model, I am not capable of comprehending or manipulating human emotions or psychology. Poking on Facebook is merely a virtual gesture that can have different meanings for different individuals. It could be a friendly gesture, an attempt to start a conversation, or sometimes it could also be perceived as annoying or inappropriate. In general, the meaning of a Facebook poke depends on the context of the relationship and the intentions of the person who pokes.