game-theoretic analysis of toilet seat practices

http://www.scq.ubc.ca/the-social-norm-of-leaving-the-toilet-seat-down-a-game-theoretic-analysis/

Of course--as long as we're being intellectually snarky here--they're missing a potentially significant cost: that incurred when one believes that the seat is down and acts accordingly...and it's not.

how-to videos for relationships/dating advice

by some very funny Brits. In format it's a straight instructional video, but with tongue stuck so far in cheek it's in danger of coming out the narrator's ear.

E.g., "How to Undo Her Bra With One Hand":

http://www.videojug.com/film/how-to-undo-her-bra-with-one-hand

Also includes such gems as "How to Kiss Passionately", "How to Be the Perfect {Girl,Boy}friend", etc.