a homosexual act usually involving 3 or more males whereby one male will receive ejaculation in his mouth from all the others, then spit it in a spoon for placement in his rectum
I cantbelieve that guy did the megametal with the whole rugby team, he must have used a ladle.
if meta is something about something (information about information), then megameta = something to the 3rd power (ish) something about the something that was about something.