Are we (humans) incapable of more than one "thing" at a time?
When ever there is some funny fad going around the world, it seems to replace any older fads until the next big thing arises.

One of the best examples were perhaps the almighty Chuck Norris and badgerbadgerbadger.
Then there are the localized fad, for example we Finns now have "Hokkasen Olli", a man who tried (on tv) to drink seven glasses of a well know soft drink, but only managed three.

I blame the goverment, speedcameras, and that fat Chinese kid.