Hermit Crab? or Garden Variety Snail?

so our new hire at work is homeless... i deduced this at first by the fact that he carried all of his worldly belongings in a giant army surplus duffle bag on his bag.

he resembled a hermit crab.

last night we were watching "Drop Dead Gorgeous" and i think that Kirsten Dunst's character Amber Atkins put it best when she said " Oh no... I never eat shellfish. Mom once told me never to eat anything that carries its house around with him...you never know the last time its been clean."

Today i asked my boss and sure enough he is homeless and he is dirty and he does carry his house around with him on his back