noun. This is like, a lot, man.
Related terms: metric buttload, metric assload, metric arseload, metric heinie-load, metric poop-load, metric poo-load, metric shitload, metric crapload, metric fuckload, metric boatload, metric truckload, metric smurfload, metric cuntload, metric dickload, metric cockload, metric pantload, metric pantsload, metric jesus-load.
Real citation: "I know that X11 is a protocol, defining an abstraction of a user interface, "mechanism, not policy", so that there a metric booty-load of libraries wrap it and expose it to various other technologies."
(Anonymous Coward, March 17, 2004, http://linux.slashdot.org/article.pl?sid=04/03/17/226216&tid=110&tid=152&tid=104)
Made-up citation: "John Cage said, 'Do nothing for one reason only.' I say a metric booty-load of reasons is even better."