Kegaroke
Noun. A specific form of karaoke party (usually impromptu, or with little prior planning) that includes a community keg of beer, therefore making it a keger party with karaoke. Historically the keg was usually funded for by asking potential party goers for donations a couple of hours or even minutes before starting karaoke with the keg open to all, even those who do not participate in singing.
Hey Dave Tucker, are you coming to the Kegaroke tonight? No? Well can you at least donate a few bucks for the keg at least?