"I can't take this anymore! Get out of me!"

One day, Sasa feels an intense pleasure while urinating in the restroom at work. He weighs the pros and cons between rubbing one out and holding back, but reason wins out at the last second and he decides to wait until he gets home. After jerking off back at his house, he thought he was in the clear... Hold on, is that jizz moving!? This was just the beginning of the numerous invasions of a strange, semen-like creature into his urethra and bladder, followed by his struggling attempts to remove it!