I have never been navel tickled with a paint brush before, but I'm going to see if I can get my lady friend to give it a try. One of my more ticklish spots and her tongue sends me into hysterics. Thanks for a great idea NadiasNavel!
Mine doesn't really do anything unfortunately but I'm definitely sold when a girl has a sensitive belly button. It's always fun introducing that to someone who has never experienced it before and getting a positive reaction from it. Either tickling or just pure stimulation, both are incredible fun!