Toby the agoraphobic Turtle

For those that know I read Pearls before Swine. http://www.comics.com/comics/pearls/index.html
One character is Toby the agorophobic trurtle, I now have him as my wallpaper at work.
Just before we left I should it to Bea and I got the comment good job he's not claustophobic.
Can you imagine an agrophobic claustrophobic Turtle? Can be in his shell, can't be out of his shell, boy do I feel sorry for him!