they get holey and get raptured!! of course one is always left behind. actually I think the sock monkeys eat them, we know sock monkeys exist, what else would they eat? smell ones breath one day, if it smells like a 12 mile hike,you know where your socks went, of course if you were made of socks you might smell like a foot anyway. This solves another issue, if sock monkeys eat socks, they have to poop, is this where dryer lint comes from? we know Easter bunnies poop black jelly beans, where else would they come from? so sock monkeys must poop sock lint. I solved the mystery!!