Play it cool

You do your best to stay focused and appear totally normal to the customer. She apparently can't see the female employee crouched behind the counter, because she lays her clothes down on the counter, and just stands there looking at you, waiting for you to ring them up. You struggle to think of what you're supposed to do, and struggle as well to keep your hips still, as the employee below you works your cock over. "Umm... did you find everything you need today?" you ask. The customer nods, and pulls out a credit card, dropping it on the counter. There is a little scanner-gun on the counter, and you pick up the clothes, and scan them all in. You look at the screen in front of you, and there is a spot on it that says credit card, you touch it, run the credit card through a slide, it authorizes, you have the customer sign, boom. So simple you can even do it while your cock is being sucked. You reach down to get a bag to put the clothes in, and the employee takes the opportunity to give your balls an big
squeeze. You can hardly hold it in as you put the customer's clothes in the bag. She turns around to leave, and you begin to say "Have a nice ..." but as you are saying it, you feel your cock exploding into the employee's mouth, and the last word, "day," comes out of your mouth all high pitched and distorted. The customer turns around and stares at you, and you try not to buckle your knees, smiling weakly as the employee continues to pump your cock dry with her mouth. The customer gives you one last look, then walks away.