Slave kneels on all fours near bed.  Slave is wearing a collar with a chain attaching it to the wardrobe. Mistress walks in and sits on end of bed.  
  "You may start licking my boots." Mistress moves one foot forward slightly.
(while slave licks) "Show how grateful you are to your Mistress ... I have been doing some research on the internet and I have a few surprises for you." 
Mistress pulls back from slave as slave gets to very top of boot, slave is held back by collar.  "I didn't say you were allowed to lick my flesh." Mistress slaps slave.
Mistress stands up and unclips slave's collar from the chain.
"Stand up slave.  Put these on." Mistress hands slave wrist cuffs.  Mistress puts the ballgag in her underpants and thoroughly wets it. When slave has the cuffs on, Mistress pushes the ballgag into Slave's mouth.
"Lay down on the bed.  Stomach down."
Mistress climbs on top of slave on her knees, then attaches Slave's hands together.
"I want you to rub yourself on the bed ... as I know you like to do."
Slave does so.
"Enjoy your erection Slave. You are going to learn to appreciate this privilidge.  I have had an erection prevention device made for you."
Mistress opens the device and places it in fron to Slave where he can see it.
This device makes errections so painful, a slave will learn to control them.  So if you have unauthorized naughty thoughts you will be in a lot of pain, or you will control it and be denied of your erection.  Both please me. The slaves I have read about suffer the pain, but fairly quickly learn to control it.
Are you ready to surrender control of your erections to your Mistress?"
Slave nods.
"Good.  Because I am a kind and generous Mistress, I will give you 20 seconds more of erection time." Mistress gets off Slave and stands by the bed. 20, 19 ..."
"Stop. Get up."
(I can get up with hands attached behind my back - I checked)

  


Slave is wearing the testicle ring with the lock.
Mistress clips slave's hands together, and to a small chain