Facebook Hypocrite or FaceCrite
A FaceCrite is when someone goes full-on fan of something on Facebook, then they flip and join the total opposite, like they're just trying to annoy everyone in the middle.
He joined 'I Love Cats,' then he joined 'I Hate Cats' because he had a bad experience with a cat.
She became a fan of 'I Love Exercise,' then she joined 'I Hate Exercise' because she got a bad workout.
He liked 'I Love Peace,' then he joined 'I Hate Peace' because someone yelled at him.