A really big party that was held in Dover, MA. The party was named for its host, Meebs (who nobody actually knows), and gained publicity when everyone got in trouble for going.
example 1 (pre-party)
Guy 1: Dude, are you going to Meebs-a-Palooza?
Guy 2: I don't even know Meebs.
Guy 1: Who cares! Everyone's going!!
example 2 (post-party)
Guy 2: Yo, isn't Meebs that kid Adam?
Guy 1: I think so.
Guy 2: Legend.