Horton hears a what? I believe the big fella hears a Who on the Horton Hears A Doctor T-Shirt, which combines two very well-known doctors in an image that should appeal to fans of both Doctor Who and Dr. Seuss.
I imagine it’s possible the pesky speck of dust carrying Who-ville simply landed on something that resembles a TARDIS (a TARDIS Cookie Jar perhaps?), but I prefer to think of it as Horton the giant, friendly elephant cradling the real deal that has a tiny Time Lord inside.
Regardless of which train of thought you prefer, you can get the Horton Hears A Doctor T-Shirt for $25.56 at RedBubble.com.