I stop groping him for a moment and grab the book. I think for a bit, wondering how I can make this situation even better when it hits me. "I should make everyone's balls twice as big as well as have blue balls cause penis growth" I mutter before writing it down. I feel my own boxers tighten as my groin expands. Thank goodness for the stretchy material too. I look back at the business man. His bulge looks almost as big as mine. He must be going crazy wanting to bust his load.
I get back to him and resume nuzzling the massive balls between his legs. I quickly see his dick has a gotten larger with the new changes I made. He has a large wet spot where the head is, I also see it twitch with anticipation. The ride is long, for him at least, as I spend the whole ride fondling that giant package. When his stop arrives he politely thanks me for the pleasurable time and gets off. His walk looks very awkward having to support a beach ball sized groin.
I finally decide to go home and explore my new developments in private. Getting hornier with every passing minute. I could feel my balls swell more and more with cum. It's the best sensation I've felt all day.
Right as I shut the door I strip naked and soak it all in. Before get to playing with my massive nuts I...