Reading to kids, do you edit?

Rhett reads on his own too... too much sometimes to the point that he is catching some of the things I wish he wouldn't. He also looks up songs on youtube with questionable lyrics. (especially for a three year and a half year old)

When I read to him I change the story around if he knows it...its fun to frustrate him with plot twists. I have invented a dozen endings for the lorax....