McIlroy gives Wozniacki an engraved club

Rory McIlroy gave girlfriend Caroline Wozniacki an engraved lob wedge as a gift. (Twitter)

What happened to the innocent days when your boyfriend just gave you his class ring, or you sauntered around the high school halls wearing his ridiculously large (and let's face it, kind of stinky) letterman jacket? In the good ol' days, a simple "I'll take two straws with that" was enough to tell the world that you had yourself a steady and you didn't care if everyone knew it.

Those days are over. Kids these days have kicked it up a notch. And by "kids" I mean "multimillion-dollar athletes who are dating."

U.S. Open golf champion Rory McIlroy has already flown all over the globe to spend some time (rather publicly) with his girlfriend, world No. 1 Caroline Wozniacki. He even reportedly brought her home to Ireland to meet the parents. So what does a boy get for the No. 2 highest paid female athlete? Flowers and chocolates just won't do.

So obviously, OBVIOUSLY, you get her a golf club with your own designated couple nickname engraved on the head.

I've always been partial to "McWozilroy" myself, but "Wozzilroy" is cute in its own "Fozzy Bear" kind of way. That said, the question is: Where in the world did that second "z" come from?