Gigglers has a great big button right in the center of her belly. If you press it, a smilie will appear and she will laugh and laugh. It would appear that she has a tickle button for a belly button! Many of the denizens make a game out of who can press Gigglers's tickle button and make her laugh the most.
After years of this treatment, Gigglers has become quite adept at dodging tummy tickle attacks. She's quite confident in her abilities, which makes catching her all the more rewarding.