For a long time I thought that all celebrities used their real names, as opposed to alternate stage. That's not the silly part of this post. I saw a promo/segment on a WWF show which showed Mr. Perfect playing a perfect game of basketball, saying he managed that because he's perfect, and I wondered how his parents knew to name him perfect, not knowing at the time that adults who go by Mr. or Mrs. usually have it followed by their last name instead of their first (when I was in the fourth grade I asked my teacher what her last name was, unaware that I technically knew it). If they didn't know he'd be perfect at everything (and maybe he wasn't, even in the context of professional wrestling) it's interesting that he'd be named Mr. Perfect AND grow up to be perfect.
Then I was told that most wrestlers don't use their real names. I mentioned this to one of my friends, but he pointed out that we'd rented a Hulk Hogan video that supposedly had footage from a childhood birthday party (most likely staged for the video, but we didn't know that at the time) and his birthday cake had "Happy birthday Hulk Hogan" written on it. I mentioned this to my mom, who said that parents wouldn't name their kids "Hulk", but suggested it might be a nickname or middle name. I then remembered that Hulk Hogan was credited as "Terry 'Hulk' Hogan" in Trapped in Paradise, and figured Hulk was his middle name. And several years later I learned that his last name wasn't really Hogan.