I can see how that would be hard to pick up, especially since there was a wholesale change to the product packaging. The Duzn't box is not even close to the Dud box.
Very cool observation - a re-parody following major changes to the real product packaging. That was definitely more of an ANS phenomenon, as several brands were just ripe for being spoofed over and over, although in many cases with minimal changes to packaging. I’m sure glad all those Dunkin‘ Donuts parodies got made before they dropped the “Donuts” from their name. What the heck can you do with just Dunkin’?
I’d be interested to know how many times this happened strictly in OS. Probably not that many, but probably more than one would guess just throwing out a quick guess without thinking it through. For example, Poopsie / Pupsi / Burpsi.
But back on topic, I kinda like Dud. Cute character, and the yawn is convincing enough to make me yawn when I look at it. I do like most of the laundry detergent box parodies for some reason.