The Little Prints.

Last night as I rolled my chair away from my desk I happened to glance down at the carpet. Oh my, what was this? If you're from the boonies like me you immediately think deer! Why I've got deer hoof prints in my carpet. How strange. I called Alan over to see this miraculous sight and of course to warn him that we may have deer lurking in our living room.
After careful, thorough examination of the tracks Alan says it's not deer but wheel marks from my office chair. HA! Ha I says to him, then explain to me why I've seen tracks a zillion times before EXACTLY like these in the woods back home.
Alan smiles craftily, a glint of humor sparkles in his eye and he says "The woods were full of office chairs obviously."
Oh.....