A dominatrix outfit

I heard the sound of high heels on the wooden floor coming your way. Maybe it was her mother, or someone else? The sight that came up to me is still burned into my mind.
Hellen had changed her school clothes for a tight latex bustier and matching short shorts. Her legs were squeezed into a pair of high-heeled black thigh boots. In her hands she held a large leather purse and a riding crop. Her usually shy and innocent face, now sported a wide naughty smile. "I may have lied about why I wanted you to come home with me Mathew."

She reached out with her riding crop, putting it under my chin. "I´ve had my eyes on you for some time now Mathew. Not that you seem to have noticed, but I have." I tried to back away, but only backed into the door which I found to be locked as I tried the doorknob. "Oh no, don´t do that Mathew. You don´t even know what you´re in for." Hellen continued, walking up close to me, the heels putting her eyes level with mine.
"Tonight you will make a very important choice. If you stay, you and I will explore a new side of you, the submissive you that I know is in there. I will pull that side out of you and teach you and it to be good boys. You will do many things that you didn´t think you would or could do. Or you could wait and ignore me for the rest of the term, going back to your sterile sex life and grade papers." Hellen stroked my cheek with the riding crop. "So, what´s it gonna be Mathew?"

She produced a black leather collar from her purse, offering it to me. The implication was clear, if I accepted her collar it would mean submitting to her. If I left now though, there was no telling what she would do to get back at me.