The events kept replaying through Jennifer’s head as she drove towards the mall. Her huge cock was as hard as it could be and Emma tried to hide the fact that her eyes kept wandering to it, her own cock just as hard.
Jennifer slammed on the breaks, surprising Emma.
“THERE!” Jennifer shouted out.
“W-what? That’s not the mall...” Emma asked. Jennifer was scaring her a bit. She’d never been this loud before.
“FUCK THE MALL! That’s the town water supply! We can infect EVERYONE if we go there!” Jennifer shouted out, getting out of the car and grabbing her purse.
“Uhhh... okay.” Emma said, getting out of the car.
Jennifer was nearly sprinting towards the town’s huge water reservoir, a dam near the edge of the city limits. She opened up her purse and took out all the bottles of corruptive breast milk and horsey semen and dumped them in.
“Ohhhh, that’s not gonna be enough, though, is it? Mmmmmm....” she said.
Emma came up behind her and watched in awe as Jennifer’s balls began to grow. The already huge baseball sized testicles doubled in size, filled with semen.
“J-jen? You okay?” Emma asked.
“I’m better than okay! I’m going to fill the reservoir with cum!” Jennifer shouted out “and you’re going to help me!”
“Huh? Me?” Emma said.
Jennifer grabbed Emma’s ass.
“Jennifer! Stop! We’re sisters... and you’re the one who didn’t want us fucking in the first place! W-wait... fucking... I never even thought of... ohhhhhhh!” Emma moaned, as her balls started to grow to match Jennifer’s.
“Mmmm, good girl Emma!” Jen said as she watched her sister jerk off into the reservoir, a mindless, almost hypnotized look on her face.
“Feels... good... to help!” Emma moaned out.
She joined Emma, the two climaxing in unison as they came over and over again, their horsey cocks filling the reservoir and turning the water a milky white...