Tree Tickle

[Masked stranger]

I witnessed this tickle last night at my local beach. One of my female friends, who is a big environmentalist, was saying how much she loved climbing trees and proceeded to climb up one of the nearby trees. As she was leaning against it and hanging from it, her shirt began to rode up revealing her white belly. One of my other friends snuck up behind her as she hung there and wiggled her fingers into her sides. My friend started laughing immediately and tried to hang on to the tree, but her belly was so ticklish she had to let go. It was awesome.

Has anyone else witnessed a scene similar to this before?