"Boxing Day is traditionally the day following Christmas Day, when servants and tradesmen would receive gifts from their superiors" (wikipedia). Being impatient with metaphor but liking the traditional emphasis on the service industry, in America Boxing Day has been taken as a holiday by the Fight Club cult (cf Palahniuk).
On Boxing Day the Fight Clubbers do not, as outsiders might expect, have a massive beatdown, as they can do that anytime. Rather, they celebrate first and personally with their own Buy-Nothing Day, spending even less than they normally do. Feeling responsible to share this with the rest of America as they can and in their own way by throwing away IKEA and Hearthstone catalogs before they ever reach your mailbox, by having point-of-sale register failures, "we're out of that, miss" and "can't find that in the back, sir" problems to raise the barrier of shopping to where you just give up and say "I didn't need that anyway".
from Ethnography as a Contact Sport (in progress)