Danny left the boss's office, mortified. God, he had a raging boner! He managed to get out of the executive area without being noticed, and went straight to the men's room down the hall. The facility was empty, but he went into the large handicapped stall at the end and locked the door.
He fumbled with his belt and slacks, and pulled them down. Shit! His underwear was tented out like he had a couple of pairs of socks stuffed in them. Grabbing the waistband, he tugged the briefs down and gasped.
The huge, dark shaft between his legs was alost the size of a can of tennis balls, with a pair of tennis balls hanging underneath. Even weirder, the base of his penis had a thick fleshy covering that was part of his lower belly. A sheath? His dick and balls looked like they belonged ot a fucking horse!
He hefted the shaft in one hand, and realized there was a foreskin covering it. As he continued to harden, the head pushed out, and the foreskin slid back, revealing a mottled pink and dark brown shaft with heavy veins. Rubbing the thick tube, Danny shivered. It felt... incredible. Even though he knew he should be terrified, all he could do was masturbate himself until he was a rigid 14 inches, and then shudder in a release that splattered a good two cups of thick semen against the stall wall.
He sagged against the back of the stall, straddling the toilet and panting. The smell was very strong, heavy and musky, probably a lot like a horse's odor. This was freakin' awesome! But what could have caused this? He'd taken a piss this morning with his average, cut dick. It had to be something here at work... something in the boss's office?
Danny wiped the walls down with some toilet paper and flushed the mess, then did his best to get dressed again. With the horselike cock slipped back into the sheath, he could zip his pants back up. It was tight, but not painful. Then he headed back. The boss had said to return, and Danny wanted to find out what was going on.