Head off with Jimbo, he's right, you need the practice

You and Jimbo quickly make your way down the hallway to the janitors closet and slip inside. As you pull the door shut, Jimbo is immediately pushing you down to your knees and fumbling with the fly of his pants.

He frees his cock with is semi-hard already and you take it in your soft hand, stroking it. Jimbo's dick is only inches from your face and you can smell it's unwashed odor of urine and semen already. As this is only training you decide to tell him.

"You need to wash your prick Jimbo," you say, feeling him hardening in your palm, "It always smells pretty bad and tastes of piss and cum usually. It would be so much nicer for me if you clean yourself properly."

"Whatever," mumbles Jimbo, now at full hardness, "Put it in your mouth."

Jimbo's hands are on the back of your head, urging you closer. You sigh and decide you might as well get to it. As soon as your lips part Jimbo pushes forward with his hips, thrusting the head of his cock into your mouth.

"Oh that's good Agent Titties," breathes Jimbo, one hand dropping to your shoulder to help him balance, the other on top of your head, guiding you back and forwards on his dick. With each tug on your hair he pushes more and more of his cock into your mouth till you are deepthroating the entire length.

You make an effort to stay alert and look around as much as you can, but your vision is mostly blocked by Jimbo's thrusting hips, as he feeds you his cock. You look up see Jimbo's eyes closed as he concentrates on the pleasure your mouth is giving him, he doesn't seem to be particularily alert.