The second episode of Game of Thrones Season 6 that was aired on April 30 has once again rise to many theories as to what all might happen in the coming episodes.
Looking at the fact that in April 30 episode Tyrion was able to tame a dragon and even tell him a story about his childhood, many are now once again contemplating if that might be the next biggest twist in the series.
The books too have mentioned that the Mad King liked Joanna and that the two spent a lot of time together. The book also says that there were even rumours that Joanna was his mistress.
While in the books Tyrion has many times portrayed traits that are more Targaryen than Lannister, in episode 2, Tyrion finally admitted that on his name day he wanted a dragon and people laughed at him.