facebook hypocrite
Someone who joins a group on Facebook about something super cool and then joins a group about the exact opposite and starts making fun of the first one.
They join a group called "People Who Love Dogs", then they join a group called "People Who Hate Cats" and start making fun of everyone in the dog group.
They become a fan of "The Best Pizza in the World", then they become a fan of "The Worst Pizza Ever" and start a war in the comments.
They join a group called "People Who Are Always Happy", then they join a group called "People Who Are Always Annoying" and start bashing everyone in the happy group.