He was de-lighted.
It's days were numbered!
Fry-day
Shorts!
Our chef. He's a little green man who lives in a toadstool. What did he use to make it Elf-raising flour of course.
He was feeling down
In a skeptic tank. (Note: I just made up this joke earlier today. I'm not 100% sure the joke is obvious feel free to suggest a better wording!)