The following are all Pink-Stinks.

monkey curtain (ape drape)
chubby kitty (fat cat)

The following are all Pinky-Stinkys.

iguana snowstorm (lizard blizzard)
aging upper part of arm (older shoulder)

And this one is a Pinkety-Stinkety.

runny ceramics (watery pottery)

So what are the rules of this language game?

Make some of your own. Write them down and see if someone else can guess the answers.