Ty hugged his tight and throbbing horse dick close to his face and grinned as his warm breath made it tingle in near-orgasm. Delighted by the sensations of owning a huge animal dick, the formerly scrawny man's man gave himself a few more gentle licks before staring down at his balls far below.
"Need some ammo for this cum blaster." He grinned, and willed his balls to turn into horse balls. Instantly, he felt a wave of pleasure growing and had to fight the pressure in his dick just about making him lose his load. Leaning back against the toilet, trembling, he watched in awe, looking past his massive black member, as his balls began to grow huge, black, and furry. They had been the size of walnuts each. Now they were the size of plums. Then oranges. And still growing!
Ty reached down and cupped a ball in each hand, hearing them slosh with sizzling horse jizz. He gasped, feeling them pull up and tighten, and fought his urge to let go again as they expanded and expanded, hanging lower as they grew heavier beneath him.
"Ohhhhhhhh fuuuuuuuuuuck!" Ty grunted, feeling his cock beggining to pump and pulsate wildly, bucking with such force that it was slapping against his chest and stomach. Heavy meaty slaps. His tip was beggining to pump thick white juices in spurts.
"N-No!" Ty concentrated, feeling boiling jizz beggining to travel up his huge pipe. He took a deep breath and willed the orgasm to abate, which it did, but not before he let out a single white spurt of cum that hit the ceiling like a shot and dripped down to the floor.
"Whoa." Ty gaped, just on the edge of climax as his huge sensitive new balls tightened below him, somehow still producing cum to fill them to the bursting point. Now damn near coconuts and heavy and tightened with the warm jizz, Ty's every movement almost pushed him into orgasm as his enormous horse cock strained at full erection and his balls churned.
Lying back on the toilet seat, sweating, he hoisted two massive balls in his palms and squeazed them oh so gently, feeling them churn and tighten in response. He could only imagine how much seed he currently held within them.
And yet, now with his huge horseified nuts and massive jutting horse cock, eager to jizz, he wondered what it would be like to go full horse. Or maybe he could finish himself right now, that was tempting too...