The Randy Adventures of NitNit, TimTim, ZinZin and/or QuinQuin
Fanfic never got such good press ("good" being a relative term here) until the dawn of the Harry Potter age. And once you get over the initial shock that goes with the extent of such "tributes", you begin to see it everywhere. Star Wars Fanfic. Lord of the Rings Fanfic. And now, at long last, Tintin Fanfic. It also happens to be viewable in its entirety here.