Similar to a boostfest, this a gathering of Halo players on a fuckin epic scale. At least 3 tvs and xbox360s are required and 10 or more players. Best night possible.
A contraction comprised of "boomer", referring to one who was born in the Baby Boomer era (1946-1964), and "retard", a term used to refer to a person who is cognitively impaired and/or one who is stupid.
Zoomer: Boomers are destroying the world.
Boomer: Hey kid that's not nice!
Zoomer: Ok boomtard