Facebook is the home of a bizarre new trend - thousands of people are changing their profile pictures to an image of a giraffe. People are posting a riddle on their Facebook walls, and people who ...

An emerging trend on Facebook has people changing their profile pictures to images of giraffes after failing to solve a tough riddle. The riddle poses the question: ‘It’s 3am, the doorbell rings and ...

Thousands of Facebook users have changed their profile pictures because of the riddle (Picture: Getty) Failure to solve a riddle being shared on Facebook is prompting thousands to change their profile ...