The phrase "straight to gay" within a porn video context refers to a specific theme or category of videos where the main plot involves a male character, typically heterosexual, who undergoes some sort of transformation or realization that leads them to explore their sexuality and engage in homosexual acts. This can be depicted through various storylines such as cross-dressing, hypnosis, or supernatural occurrences. In this particular case, the tag "gay" indicates that the video will focus on male homosexuality. So, "straight to gay (gay)" means a porn video featuring a transformation from heterosexual to homosexual acts between male characters.