Buttons and Zippers

So, what is the evolutionary intermediary between buttons and zippers?

Hmmm???

Creationists frequently attempt to poke at the Theory of Evolution by citing examples which, at first glance, pose interesting problems (flagella illustrate one example of what has been called "irreducible complexity," and bats are an example of an order of organisms which lack known intermediates in the fossil record). During my last long bike ride, I kept thinking of buttons and zippers (no evolutionary intermediates). How divine.