There are basically two types of people in the world. Those who hear, "Ohh yi-eahh!" and think of the Kool-Aid Man, and those who hear, "Ohh yi-eahh!" and think of the Macho Man Randy Savage. Admittedly, and somewhat proudly, I'm one of the latter. It may have something to do with the fact that I've never liked Kool-Aid, but there was a time (let's call it the late 80s/early 90s) when I thought professional wrestling was real.
That said, there's got to be more to it than simple preference for the brands behind the words. (After all, I've never been much of a fan of Slim-Jims either!)
Maybe it has something to do with the speakers themselves? They both have "man" in their names. But I mean, come on! Who wants to hear those words coming out of the mouth of a bulging, red monstrosity with the rough voice of a coke-head who goes around smashing things?!
Okaaaay. So, maybe it's not about the man, per se. Maybe it has something to do with the voice? They're both gravelly and straining. But whereas the Kool-Aid Man sounds like a poor man's Wolfman Jack, I think we can all agree that Macho Man's voice is at least a level higher on the unattainability scale, and that makes it something special.
Go ahead, try it. Say, "Ohh yi-eahh!" with the same intensity you might employ while trying to pass a baseball through your anus, and determine for yourself what it first brings to mind. I'm sure you'll be pleased with the result.