You were called into Professor Ilene's home, because she wanted to help you pass an exam, and has chosen which one it would be, before you could choose yourself. You weren't what it was, but you knew it had to be important, as you drove to her apartment, where the sex exam was going to take place, but found more cars parked.
Once you got out, you head to the front door, and found your science professor wearing an overcoat with blue rubber latex gloves, and matching thigh/high high-heeled boots. "So glad you could join us today," Ilene says. "Now before we head inside, just smell this rag." You do what your Professor says, and smell it, only to pass out shortly after. After taking a whiff of the rag, you woke up to find that you were no longer outside, but inside a bedroom, where you were laying on a heart shaped bed.