Breed it raw is a phrase used in the adult entertainment industry, specifically in the context of bareback or unprotected sex. The term "breed" refers to depositing one's semen inside a partner with the intention of impregnating them, while "raw" denotes that no protection, such as a condom, was used during the sexual act. So, "breed it raw" implies unprotected, bareback sex with the intent of impregnating a partner.
This tag is often associated with specific types of porn videos that feature unprotected anal or vaginal intercourse, where the male performer ejaculates inside the female performer without using any barrier method of contraception. This particular tag may not be to everyone's taste and is meant for an adult audience who are familiar with this type of content.