Because, I cum here. You don't.

"Because," you say, "I cum here. You don't."
"But--"
"No buts," you say, "I have very few rules here, but the most important one is that you don't cum unless I say you can."
She looks confused and dismayed. "I... But what about this?" she asks, gesturing to her member, still hard as steel, "You can't just leave me like this."
"I can," you say, "And I will." You continue the tour.
She looks embarrassed as she follows you through the rooms with the full majesty of her rod standing out before her. You get the feeling she isn't paying much attention to the house anymore. She whimpers as you take hold of her shaft once more.