Derick is finally able to relax once she's in the shower; the warm water cleaning her body and dropping against her still sensitive areas felt better than any previous showers. The calming noise of the showerhead helped to drown out outside sounds, as well; allowing Derick to kick back with just her thoughts and the warm water. Meanwhile, the imprisoned dick was struggling to escape and get back to constant pleasure. It banged itself against the interior of the box, but found it wasn't able to force the lid open, with it locked up tight. But, the rod was relentless, and found that while it's efforts didn't open the box, they were able to move it efficiently.
With this knowledge, the dick pushed the box around enough until it stumbled against the corner of a wall. Just what was needed, as after enough force against the corner, the cheap lock was easily broken off, allowing the genitals to slither out. Derick was still out of it, focusing on cleaning herself in the shower; unaware that the dick had just managed to open the bathroom door and get inside. While Derick didn't notice, her pussy certainly did; it contracted it's inner walls and started leaking a lot of fluid. Derick felt these urges and figured it just because she was aroused by the warm water. Sneaking past the shower curtain and into the tub, the dick centered itself between your legs, just under your eager pussy. Not bothering to try climbing up your leg, the head of the dick released a bit of precum over itself, before bending slightly. Releasing itself, the dick used the energy to launch itself upward; it's wet head easily managed to slide into your moist hole, which quickly locked itself around like a passionate kiss.
"Aaah!" You moaned with shock, feeling the penetration instantly. "Oh god, no!" You yelled, looking down at the just the balls poking out of your pussy. "No,get out!" You desperately try to pull it out, only to have your pussy lock tightly around it's lover like before. "Mmmm, god!" You spasm as the dick moves itself around in a thrusting motion to have sex with you once again. "Fuck, I don't want this!" You cry, feeling the pleasure quickly surmount, and the dick comes inside you.