Have you ever encountered an instance in a cartoon that was very blatantly the animator/writer inserting their fetishes?
Pic related. You can dismiss this as just cartoon sillyness, but it's too suspect.
It makes no sense in the context of the episode, they were on a ghost ship and ghosts did this to her, for like no reason.
If the ghosts were just tickling her normally with their hands or feathers or something, you could easily just say it's just some PG torture, but they had this whole elaborate set up where she's tied up, and milk bottles are set up to drip milk on her feet for cats to lick off
It's all far too specific, doesn't mesh with the rest of the cartoon