[samdiatmh]

Attach your suction dildo to the middle of the rim of your bathtub. Put your hair brush's bristly end right up against the dildo (side without balls). Use some strong tape to hold this in place.
Put clamps on your nipples. Get your cuffs and toothpaste and put them within reach of the dildo.
Now get on the dildo so one foot is in the bathtub and the other is on the floor. Only let it go in just past the tip. Slowly go up and down on the dildo, but don't let more than 5cm below the head go into your pussy. Once you're nice and wet from the teasing, put a thick coating of toothpaste on your clit. Then cuff your hands behind your back.
You're allowed to cum, but only while you're all the way down on the dildo. This should force the bristles to hurt your clit nicely.
You can't get up until you cum twice.
Once you're done, you must fully clean the dildo with your mouth.