While Parker was coming down the stairs, his Pelenka got caught on the railing and it ripped the waist. Parker pulled it up and went to find Nixie. Being the diaper making goddess that she is, she got a needle and some extra strong thread and sewed the waist of the Pelenka back together. Then she needed to strip him because Parker needed a diaper change.

And yes, I'm aware Nixie is as big as Parker. This was an error on my part. She's supposed to be much bigger than Parker.