Reminds me of the ancient Indian poet whose poems gave one meaning left to right and totally different meaning right to left
http://www.sanskritebooks.org/2009/09/raghava-yadaviyam-with...
For example, http://www.independent.co.uk/news/weird-news/14yearold-floor...
> They were a whole genre of poems called "adhama kavyas." Literally, in Sanskrit, it means 'inferior poems'.
They were deemed inferior because they were low on traditional poetic quality- meaning, prosody, and language, and high on a sort of acrobatics.
There are fascinating poems, including palindromes, meaningful poems written by repeating the same letter, nested structures, etc.