i once toyed with the idea of making a script that will change all the words (in english) to close synonyms (or antonyms w/e) and ideally there would be a variable that can tune the "closeness" of synonyms (so you can also use more distant once for memetic effict)

its actually pretty easy to write you just need a quite big dictionary of words (as keys) and synonyms (as list of values) then basically:

for word in text:
output += random.choice(synDict[word])

its nearly all code