LOL @ Norman Bates.

In middle school we had a gecko as the class pet, and I was given the honor to name him. I named him Norman Bates.

And oh boy, my cats have a lot of nicknames. Some of them are nicknames of other nicknames and have gotten further and further away from what the original nickname was. For example with Polly; Noodle--> Chicken Noodle--> Chicken Nugget--> Chicken.
Polly (besides the 4 above): Chick-Chick, Dumdum, Fuzzy, Polly Wolly Puddin' Pop, Chatterbox, Funny Face, Chubby Cheeks, Cheeks, Chickadee, Polly Wolly
Molly: Molly Grace, Your Serene Highness, Your Highness, Molly Wolly, Chirp, Princess, Miss Molly, "Good Golly Miss Molly!"
Those are there regular nicknames (ones I usually use all the time). In addition, there are two other categories of nicknames:
-Nonsense names that just pop out that I don't use again
-Common terms of endearment (sweetheart, baby, cutie, beautiful, etc.)