Ben shuffled through the previous options in a panic, not knowing what to do. Browsing back through the menus, he noticed the "Bull, Horny" option was in the "Active" category. It was grayed out, and he couldn't edit it anymore. However there was a "Passive" menu that opened to more choices, apparently describing genitals in their flaccid state.
"That must be it", he hoped, clicking through a few options. "Human, Soft", and then numerical values from 1 to 20. Was this a length measurement? Inches sounded wrong, so it was probably centimeters. Ben hit the "10" option, whic would probably put it at average length for a soft penis.
An electric shock ran through his member, causing a brief pain, and the changes started.
Ben witnessed the shaft between his leg slowly turn pink, gaining the definition of a human penis. Shrinking back in size, it looked fairly similar to the one he had a moment before. As it rested between his legs, Ben let out a sigh of relief. He looked human and normal again.
But his soft penis continued to stirr. With horror, Ben watched it shrink once more, receading further into his body. He tried to grasp it and pull on it, but it only elicited a mixture of pain and pleasure, without keeping it from getting smaller and smaller. His large bovine balls also shrank into a tiny, smooth package.
Finally his cock stopped around 2 inches in length. The skin was very soft, and Ben realized his error. He sported the dick of a 10-year-old, because the numerical values were growth indicator by age.
Just as he considered fiddling with the computer again, he heard a car parking in the alleyway, and someone about to come home. He closed the computer in a hurry and fastened his belt over his jeans. As long as he stayed calm and avoided getting turned on, Ben quickly thought, he would be able to hide his "bull" secret...