A porn star

To your surprise, the visitor seems familiar, until you recall her from one of your porn stashes. "Why are you here?" you ask dumbly.

"Your grandfather ask me to teach you the ropes, since you seem to have a crush on me."

You look up and down on the porn star, wondering how the heck did your grandfather found out about your perverse crush. Realizing that it would be pointless to think too much about the matter, you address the visitor