Facebook Pirate
Facebook, but it's been turned into a pirate's tavern. Everything is cursed with pirate speak and you can't even log in without being yelled at by a parrot.
Your homepage says 'Arrrr, welcome to the ship of Facebook!' instead of 'Welcome to Facebook.'
Your friend's profile says 'Aye, this be Captain Friend.'
The login page screams 'Enter your password, ye scurvy dog!'