What is X-rated poetry?
Dictionary.com defines x-rated as:
1. (of a motion picture) having a rating of X; intended for adults only.
2. obscene, sexually explicit, or vulgar: X-rated language; X-rated magazines.
So, poetry having mature content of a sexual nature or obscene language could be considered X-rated. Though, explicit stories and lyrics are not something of modern poetry and rap music. Take the Big Bang Theory's take on Chaucer's 14th century "The Miller's Tale,"
Haiku Heights April A to Z: Xerox
copies of my heart
flowing fast in black and white
lost dog, please call
Carpe Diem: Storyteller
tales of old
come alive tonight