I've done it. I've finally found a game as banal as the potato-peeling game (which is hosted for some inexplicable reason at the Gorillaz animated hiphop group website).
Without further ado, Match The Socks.
Don't worry, there isn't anything hiding behind them. It's a strange site, some kind of an art project, I think. Click on the squiggle at the bottom of the page to see more of it. All SFW, as far as I've looked, but there are sound effects on some pages.