https://www.youtube.com/watch?v=YeMnPyusuBE
So after 75 years, it seems some madmen have gotten their hands on this forbidden joke and decided to leak it online.
Out of fear of dying, I shan't be reading it myself. At the same time, people have a right to know, so with closed eyes I'll copypaste it here for any fool curious enough to look.
Read ahead at your own risk:
YoshiAsa