An event, whether spoken or an action, that allows for a fun-filled occassion to become even better; an event that that initiates the first happenings of fun. The opposite of a buzzkill
Dude, last night we were just sitting around mark's place and then B-squared showed up with a pizza and Halo: Reach. Yeah I know it doesn't come out for another two months. IT was a TOTAL buzzbirth dude!
Omgsh! I'm having so much fun at this LMFAO concert! wait..whos that coming out on stage? OMGSH!!! its Drake and Passion Pit! BUZZBIRTH!
Wal-Mart Greeter: "Ok Butterthighs, I'm callin' security on you. Samson! Samson get down here right now! Yeah, I gotta buttathighs over here an' he's tryin' to steal some Uno cards and a gallon of milk! And you know what, he stole on of my stickas! Yeah, get down here right now Samson!"