Be. Afraid. If you thought Hitchcock's movie The Birds was scay (you wimp), then imagine if they'd had arms, big, bulky, muscular arms that they could slap you across the forehead with. Terrifying stuff.
You know those cosplay costumes that really good looking girls wear that make you want to become a life-long comic fan and spend your life at those nerdy conventions hanging out with them? Well this is not one of those times.
If you're not on Facebook then what'll happen to you is like what happens to Michael J. Fox in Back to the Future in that photo of him and his brother and sister, you'll eventually just fade away out of existence.