Natalie tickled all weekend

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I remember a great story that starts with something like "My name is Natalie. My hobbies include bondage, tickling, and girl-to-girl fun." All the characters are women. At the beginning, her friend sends her upstairs to get undressed. When she returns, she blushes that a third woman is there. The pair tie her up and tickle her. She ends up being in bondage and repeatedly tickle tortured from Friday evening to Monday morning. Someone feeds her pizza, holding it with toes. Someone uses her bottom as a footrest. When she needs the toilet, she stays partly restrained and is escorted. Her friends attempt a shift system to keep her awake overnight. The last friend to leave doesn't release her, but makes her able to release herself. She is happy to be covered in rope marks.

I've looked hard for the story and can't find it : (