Can't Master All
The Doctor smiled, there was undeniable joy because of a… tin dog. The Master rolled his eyes, not seeing a reason to be excited. The Doctor ignored this, continued beaming and said "K-9!" as though speaking to an old friend. A fact that the Master would not be surprised at.
"Master" the dog's voice was affectionate for a robot.
The Master turned and looked at it properly but it wasn't looking at him. It was looking at the Doctor "Wait! Wait! Wait! He's not the Master!"
The dog looked at him and then back to the Doctor "The Doctor is Master"
The Doctor smirked at the Master's annoyed expression.
"No" the Master insisted "I am the Master"
"Negative, sit. Doctor is Master. You are just annoying" replied the dog.
"You will address me as the Master. I am the Master and you will obey me" The Master stood exerting his height and power. Something that had no effect on K9.
"Negative, sir" K9 repeated.
"Call me the Master"
"Negative"
"Master"
"Negative"
"Master"
"Negative"
"Master"
"Negative. I am a robot you cannot win this debate against me. Doctor is Master"
The Master growled in annoyance "I. Am. The. Master"
"Doctor is Master"
The Master sighed "You can deny it, I am still Master"
"Doctor is Master" repeated K9 defiantly.
The Doctor laughed ""Well… you can't master them all' while the Master just glared.
A/N: And this is what happens when I have a really bad day and then role-play something with the Master in while watching School Reunion. Reviews mean love.