Since no one likes being left out, I'll give an unofficial and severely abridged explanation:
-Fuzzy on the original origin but, in one of the threads someone was referencing rumors or claiming inside knowledge of something generally perceived as ridiculous (as usual).
-Said poster somehow referenced the President of Animal Kingdom (or one of the other WDW parks).
-An individual park's highest title is Vice President
-In the ensuing chaos in the thread, several titles were claimed
-Mr. Penguin ended up with a seemingly unanimous claim to the title of President of Animal Kingdom
-Due to his general congeniality* and wit, Mr. Penguin's title seemed to be the only one with real staying power
-Many lurkers feared cutbacks when said title was no longer showing on his posts
*Your mileage may vary