Facebook Hypocrite or FaceCrite
A Facebook Hypocrite is when someone supports a group or fan page, then they flip and support the exact opposite, like they're trying to break the internet just for fun.
She joined 'I Love Cats,' then she joined 'I Hate Cats' because she had a bad day with her cat.
He became a fan of 'I Love Exercise,' then he joined 'I Hate Exercise' because he got a bad workout.
She liked 'I Love Peace,' then she joined 'I Hate Peace' because someone yelled at her.