https://www.amazon.com/Dick-Dialogues-Spoof-Narrated-Funny-ebook/dp/B00NBGRA3K
This is a book on sex education but the author, instead of making it boring and serious, has used a naughty penis to narrate the information with the help of allegories, puns, similes and adult jokes to drive the messages home -- do safe sex, don't worry about the size, no means no, being gay is okay and always respect women. This is a unique book that is a spoof and yet full of serious information.