These are not parodies, they are puns. Making Harry Potter an actual potter, as in one who makes pots, and adding a slice of pie to the Life of Pi, these are just examples of wordplay. Some of the wordplay doesn't even make sense. Planet of the Legos? I recognized the scene so I got the answer right but what is the link between Legos and Apes that makes that substitution make sense? Just odd overall.