the attention span of a fill-in-the-blank

Keith Phipps is already previewing next summer's blockbusters, even though this summer's haven't even peaked. (Nor are they likely to.)

That's a level of pre-dedication matched only by Wal-Mart's Thanksgiving rollout in early August.

Frankly, we are running out of organisms with short attention spans to complete the increasingly necessary "the attention span of a/an ----."

Goldfish, rabbits, and puppies are just too focused.