Turtles, of course, are not known for their warp speed afoot. Which is why they sometimes wind up as turtle soup.When someone has to use a sundial instead of a stop watch to clock your time in the 40-yard dash, more than hares are on your behind.In fact, pitching legend Satchel Paige may have been referring to turtles when he said: “Don’t look back. Something might be gaining on you.” Actually, I disagree. I think it’s a glitch in the evolutionary master plan that turtles aren’t born with rearview mirrors.But not all turtles are victims of this reptilian coldness. There is a two-headed turtle on display at Big Al’s Aquarium Supercenter in East Norriton, PA.No word on whether the turtle has developed lumbago by trying to look at both its heads. But no matter what direction the turtle is plodding along in, at least one of its heads can see the oncoming speeding traffic. And if this particular turtle ever makes it to Reading — if it’s walking it ain’t happening in my lifetime — it will be able to see gunmen approaching from either end.