"Tits job" is a combination of two words that can be understood in the context of adult entertainment.
"Tits" typically refers to female breasts, which are often a focus or focal point of sexual content. "Job" in this context can be interpreted as a term for oral sex, particularly when referring to fellatio (oral stimulation of a male's penis).
So, the tag "titsjob" would likely describe a scene involving female breasts and oral sex, potentially with a focus on performing oral sex on a man while being fondled or caressed by the woman.