Prompt: Write a short story about a man who discovers a magical portal

John had always been interested in the strange and unusual. So when he stumbled upon a portal that led to an alternate universe, he knew he had to explore it.

As he stepped through the portal, everything around him shifted and changed. He found himself in a strange world with unfamiliar creatures. He was also now shirtless, which was a little odd.

John decided to head towards the nearest waterfall to cool off. As he stepped towards the water, he found himself shrinking and then growing back to his normal size.

He turned around and saw a creature resembling a dragon staring straight at him. Terrified, John ran the other way. As he scrambled towards the portal, he saw the dragon start to follow him.

Just as John was about to reach the portal, the dragon caught up to him. With one swift flap of its wings, it knocked him backward and trapped him between its talons.