She hasn't earned your load.

You look down with disdain at the potential breeding whore on your cock. She took it, sure, but her pussy wasn't really deep enough for your liking and her dirty talk was subpar. She should have been better prepared, especially given that she knew she'd be first today. "I'm going to cum," you say, as you feel Samantha's body tense with anticipation. Just as you reach orgasm, you yank your cock from her pussy and pump a massive shot of semen on the absorbent mat in front of you. Samantha's eyes dart up to meet yours. Her face fills with sadness and tears well up in her eyes. All that time waiting in the applicant pool, completely wasted with nothing to show for it but a sore pussy - you didn't even dignify her with a load elsewhere on her body. "Maybe next time," you say with a smirk. You and her both know that there wouldn't be a next time.

You flex your cock to delay the next shot of semen, your incredible control of your member allowing you to deliver loads at your discretion. "Rotate!" You shout at the employees.