You give it a try

“I’ll try it out,” you reply. You see Jan’s dick jump under her lab coat.

“Follow me, Sam!” You follow her massive package as she threads through the office space to her lab. There she grabs two injections. “Unzip!”

You shrug and open the front of your pants. She cups your own smaller package and you feel a painful pinch twice as she injects your balls.

“Fuck! That hurt!” You curse.

“I know, I’ve done it quite a few times,” Jan sympathizes.

She grabs your waistband and tugs on it, peeling it down. She pushes you on your back on her exam table and you kick off your jeans as she unzips herself. You spread your legs wide and she aims her thick cock at your hole and you start the day’s work.

*****

You take her entire volume in just a couple hours. Your belly wobbles as she finishes up.

“There you are, Sam. That’s sure to give you some great results today!”

“I love being filled so big it’s hard to walk,” you tell her once you get to your feet. “My day’s just begun, too!”

“I’ll see you back here tomorrow, if you want! I’ll have another big load for you again, I’m sure!”

You head over to the shuttle and get on and do the opposite of what you did last time. Hopefully you arrive at your preferred destination!