Ok, here's a challenge. How about an interesting Ranma/Kodomo no Omocha fanfic where Pantyhose Taro or some other person -- because I can't see Ryoga, Mousse, or several others having the guts and it in them to do it -- get revenge on Ranma by feeding him short enough age mushrooms that cause him to revert back to a baby, and then he is left on a park bench somewhere and Misako Kurata discovers the baby.
Maybe even making it a perma-curse story as well, or have the curse be locked for the first five years for some reason. Of course, the reasons for becoming well known would be different for Ranma.