When I say the word "fun," what do you think of? Hanging out with friends? Throwing light bulbs off of the top of a roller coaster? Fighting children? Yes, fun is subjective because it's directly connected to entertainment, but I'm willing to bet that almost nobody said, "Eating a candy bar." And if you did, there's a pretty good chance that you're a boring piece of shit who seriously needs to get out of the goddamn house for a bit and meet some humans. Counselor humans.
Via Merriam Webster
5 : Potato chips.
Now, you may happen to be eating while doing any of those activities, and that's perfectly fine. Even just going out to a restaurant with your friends can be fun ... but it's not the act of eating that's supplying the entertainment. It's the dick jokes and putting soy sauce in Chad's Coke while he's in the shitter. Not once have I ever seen someone staring bored into space until their food arrived, and then immediately looked down at their plate and proclaimed, "Oh, man, this night really sucked until I saw the color of my pasta!"
But that's what "Wacky Mac" wants you to believe. In fact, they think you're so hopelessly fucking stupid that after eating their colored rotini, your brain's only function will be expressing amazement and bewilderment that chewing and swallowing a piece of food could be as entertaining as it just was.