Talk:Slumber Party/@comment-15687828-20140829221955/@comment-4749365-20140831001224

Gotham City is in New Jersey as revealed in Sidekick. Seeing as how the house had a stylized W I assume it was the Wayne Manor and Gordon was drinking out of a GCPD (Gotham City Police Department) mug. The Titans probably transported there with Raven's magic.