Those commercials are THE lame.
Here's two better concepts, right off the top of my head:
A: Have Snuggles the fabric softener bear (if, for some reason they want to retain the bear continuity) poke his head through many layers of Charmin (a la the infamous SNL Alien parody, and I'm assuming they probably have the rights to said Snuggles, but fuck me if I'm gonna research that) and make some pertinent comment. Like, " Wow! that was hard!...But, soft, too!"
B: Mom and two kids are at the store. Mom looks at her list and says "Guys go get the Charmin."
Kids hit the TP aisle, younger kid grabs Brand X off the shelf, older kid slaps it out of his hands. Bewildered younger kid looks up and older kid says, "Get the Charmin."
Younger kid says "Why?"
Older kid says, "Mom said. She should know." Alluding to potty training experience.
Or another version would be, "Dad says. He should know." Delivered with a disgusted lip curl. Alluding to... well, it's better than frickin cartoon bears, eh?