Free bubbly in the subway? Sounds like the best idea ever.

Wedding website The Knot wants to break the Guinness World Record for the biggest toast ever by bringing 600 people together in the Fulton Center subway station for an epic cheers. RSVP's were due Tuesday, but if you're in the area on Thursday at 4:30 p.m., we recommend stopping by. Hey, you never know (if there will be free champagne for hangers on!)

And maybe they'll end up wanting more people to take part. Once a record is set, someone will try to break it.