You get disciplined

Nadia shows you where everything is in the kitchen and then prepares a simple sandwich breakfast for Mam. As she finishes, Mam comes down from her bedroom. She´s only wearing a night gown.
She sits down at the kitchen table and eats her breakfast while you and Nadia stand ready behind her should she need anything. Finally she finishes her breakfast and turn to us.
"Nadia, I´m gonna unlock you. Then I want you to show Sissy what happens if she´s bad."

Nadia smiles around her ballgag and Mam unlocks her chastity tube. Her cock rises to attention and grows to 8" when its done. Nadia grabs your hands and pull them behind your back, you hear a click and look at your wrists. She´s put a padlock in the metal rings on the cuffs.

Nadia pushes you down on your knees, placing her cock at your lips.
"When you displease the Lady in this household, you skip a meal. Instead you get a big load of cum from me."

She unbuckles your ballgag and is surprised by your forwardness. You immediately take the head of her cock in your mouth. But then Nadia gets a bit rougher. She places her hands at the back of your head and push against her crotch. She does this so fast that you can´t resist her cock entering your throat.