The toilets

You're way to horny and you can't take it any longer. You rush to the toilets and quickly close yourself in one of the stalls. You drop your pants and sit down, instinctively rubbing your erect cock. As your work your shaft your can't keep your mind off Miss Locke. You begin to stroke faster as you picture her standing over you as you kneel before her. You imagine yourself naked and on your knees wanking for her, worshipping. Even in your fantasies you don't deserve to touch her. You hate that this excites you but the precum coating your hand urges you on. You imagine her pinning you down under the heel of her boot as she looks down on you, lying on your back stroking your cock, a horny sweaty mess.

You're breathing deeply now, your getting close. Both in your fantasy and in reality you mutter the words "I'm not worthy" under your breath. "I'm not worthy, I'm not worthy Mistress". You want to serve her, to worship her so badly. The shame of your desire to submit feels so good. You've heard guys say cumming feels better with a finger up your ass, you've never tried it, but what could be more shameful than fingering yourself while worshiping her?