Timing is everything in comedy, and this is never more true than with the world of memes. Now, Mac users have the chance to optimize their response speed with iMeme, a free app that'll have you knocking Business Cat opportunities out of the park in no time. As of yet there's no ability to add your own images, which makes its current lack of Xzibit support all the more galling, but it's otherwise simple and well-designed. You can get it right at the source below.