3, click the "." button.
Poking a friend does the following: Sends your friend a notification saying poke roblox murderer mystery 2 Your name) poked you.".
This is probably the most important rule when it comes to Facebook pokes.
Although it sounds like it would be fun to receive a poke, some Facebook users don't really care much for them.
One of your Facebook friends can reciprocate your poke.