Mulla Nasruddin
He is not a fictitious figure, he was a Sufi and his grave still exists. But he was such a man that he could not resist even to joke from his grave. He made a will that his gravestone will be nothing but a door, locked, and the keys thrown away into the ocean.
Now this is strange! People go to see his grave: they can go round and round the door because there are no walls, there is just a door standing there, no walls at all! - and the door is locked. The man Mulla Nasruddin must be laughing in his grave.
I have loved no one as I have loved Nasruddin. He is one of the men who has brought religion and laughter together; otherwise they have always stood back to back. Nasruddin forced them to drop their old enmity and become friends, and when religion and laughter meet, when meditation laughs, and when laughter meditates, the miracle happens... the miracle of all miracles.
-Osho, "Books I Have Loved, #8"