"Am I not a good master?"

Megatron growled, staring at your small captive figure in your berth, wrapped in ropes and a harness around your mouth. It is not that he cares about your petty insults, but they irritate him as deeply as your hateful gaze; and the ropes, well, you ca not escape even without them, but he loves having you so vulnerable. "I take care of you, I feed you, I even clean you. Did Prime do that?" He hummed, caressing your soft cheeks with one of his giant claws, careful not to cut you. "You are such an ungrateful little thing, you know that? I do not even ask you for... payment." His servo lowers to gently brush your butt. "And yet you still try to escape."

So ungrateful, he thought, he could do so many things to you and you could not defend yourself, and yet he decided to take care of you. Why do you still wanted Prime? He gives you everything, takes better care of you than he does. "This is how you take care of a little human, not as careless as with Prime."