In theory, Lick, a new app for inexperienced cunnilingus performers, is a great idea. It includes three tongue exercises — a circular movement, a light up-and-down flicking, and a "freestyle" — that you can totally see improving dudes' oral sex game, especially the ones who have no idea how a clitoris works.
Unfortunately, in practice, the idea of a guy going down on you with the same tongue that's been touching his iPhone is not super-conducive to awesome oral sex. Remember that 2010 study that claimed some iPhones can have more germs than a public toilet? Vom-town.
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