Now, whenever you want someone who takes the game too seriously's head to explode, you suggest that they add pandarens to World of Warcraft. At some point people began rebutting this with the urban legend (finally I get to it!) that pandarens can't be in World of Warcraft because the Chinese don't allow depictions of violence against pandas, or some such.
Update - this may not be entirely false. There was an interview with one of the main WoW developers who stated that, although there is no law against fighting anthropomorphic pandas in China, the Chinese authorities had indicated to Blizzard (the games company) that they were uncomfortable with the proposed depiction of pandas in the game. Not least, I suspect, because some of the artwork shows the pandas as being quite Japanese-inspired.
So there you go. An urban legend which may have some basis in truth...