Meanwhile Mark rubbed down his equine body under the hot cascade of water in the shower. It took some getting used to, standing on hooves rather than feet -and the slippery ceramic bathtub didn't help- but after a few minutes he washed most of the cum out of his brown fur. Being a humanoid horse was quite a turn-on and seeing himself in the small, shaving mirror posted next to the soap was a constant surprise.
He had to keep reminding himself what his foster son had turned him into...
A horse... I'm actually, an anthro-horse, he thought to himself, scrubbing down lower and cupping his titanic, equine balls.
He moaned a bit but felt something odd ... something familiar.
He looked down and noticed that his balls were feeling a tight. In fact, he could feel his reproductive juices sloshing around inside them, again ... re-filling in no-time flat! Apparently, his rapid re-charging wasn't just something that came with his size: whether or not Ty knew it, he was quite the stud ... always filling up, again, rapidly!
"I dunno where you got this power from, kid, but thanks!" he said, aloud in the shower.
Slowly, the big, anthro-stud moved his hands down to his mammoth, black horsecock and grinned, feeling how sensitive it was. Soon, he was rock-hard, again, a foot and a half long with his knob bobbing around nipple-height. Moaning, he titled his head down and -slowly- began sucking on his cock again.
In the distance, beyond the water cascading down past his ears, he could have sworn he heard a snort and a bray like that of a steer or cow, coming from the downstairs living room.
Probably playing with Dustin, now, he thought to himself as he closed his eyes and slowly sucked himself.
He moans, feeling the big, plump cocktip pressing against his tongue as he bent further to coax even more of his long, thick shaft down his muzzle towards the back of his throat.
It started driving him wild as he both sucked cock and tasted his own precum.
Soon, streams of his pre were sloshing from the edges of his muzzle; his cock pumping more and more into him.
Then, the pressure building, he bellowed out as his giant balls started churning once more! He tasted more and more cum gushing into his horsey-muzzle, and swallowed as much as he could. Sucking his cock, his orgasm lasted longer this time, and he trembled, gulping it down, as he started to feel as if his muzzle were being forced open wider...
He opened his eyes, and looked at the situation.
His cock and balls were HUGE!
Gasping, Mark kept cumming as he looked at himself in shock. This wasn't right...
Another loud, bull-like grunt came from downstairs, and Ty's stepfather knew he needed the boy's help.