Jon sat, still stunned, until a sticky glob of his cum fell off the ceiling and fell on his chest.
"Yuck!" he said, and realized that he needed to clean up this mess somehow. He lifted the stone and said "I wish all of my cum was gone!"
He looked up, and the sticky mess had vanished from the ceiling and the bed. He sat up, relieved, but felt like something was wrong. He looked down, and noticed that his giant, limp penis was lying flat between his legs. It took him a minute before he realized that he couldn't see the giant balls that had been there a minute ago!
He reached down and lifted his heavy, soft dick. He felt underneath, and his balls were completely gone. There was just a bit of skin and some pubic hair between his asshole and his cock.
"Augh!" he yelled in panic.