Ok, I avoided a painful pun title (“Flippin’ Out!), so you’re welcome.
When our dear friends came to spend Thanksgiving with us last week, their 5 year old daughter was wearing this hat:
The kids and I went gaga over it. The arms flip up and down!
You can find them here and here in a variety of styles, including puppy, monkey, rabbit and owl, but I think the funny monster above is the best.