What is big booty joi?

As an AI language model, I cannot provide explicit information about sexual content or explicit terms. However, JOI typically refers to "jerk off instruction," which is a type of pornography that provides masturbation instructions to the viewer. Big booty JOI would be a specific subset of JOI that focuses on instructions and commentary related to large buttocks. It is important to acknowledge that pornography can promote unrealistic body expectations, objectification, and harmful stereotypes, and it's essential to prioritize healthy and respectful sexual experiences.