A Roman Party is a party in which a guest pukes and then proceeds to request more food or alcohol. Any party may become a Roman Party, and said party does not necessarily have to have anything to do with a toga party or any other Roman or ancient world theme party. Comes from the ancient tradition of Roman feasts where a "vomit trough" was provided for guests so they could purge themselves and then continue to feast.
Guy 1: Dude, hand me another beer.

Guy 2: Weren't you just puking like 10 minutes ago?

Guy 1: Yeah, why?

Guy 2: Roman Party!

Guy 1: Roman Party! Now gimme that beer.
by BlackBeard89 October 27, 2011
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A party thrown which starts on the 31st of July at any time and continues into the 1st of August representing the succession of the leaders of Rome i.e. Gaius Julius Caesar (represented by July) to Gaius Julius Caesar Augustus (represented by August). This party is most formally thrown toga style with laurels strongly encouraged. Wine is common to be found at these parties along with Sambuca Romana and other Italian drinks. At 12 AM on the 1st of August someone (usually the host) has to pretend to get stabbed and after the stabbing someone splashes red wine on the person stabbed to represent blood. The party continues from there as any normal party would.
Bob: "Yo I'm throwing a Roman Succession Party. Do you want to come?"
Billy: "Only if I get to pretend stab you and splash wine on you."
Bob: "Yeah that's fine, show up around 6, and bring some cheap red wine."
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