He decided to have a swim in the fountain basin.
After all, it was a hot day, and he felt sweaty, and wanted to cool off.
he fetched his swim trunks from inside.
Once outside, he sat on the edge of the basin, unlaced his shoes, and removed them, followed by his stripy socks, then stood, and took off the rest of his clothes, changed into his swim trunks, and jumped into the fountain.
He swam around the basin. He was impressed. it felt like the most amazing swimming pool ever - one that could change the size of people too.
after a hour or so, he got out of the fountain.
"Good thing I also brought my towel with me." he said, wrapping himself in the towel, and sitting on the basin edge.
Suddenly, the water took effect on him. He wriggled his toes in amusement and glee.
"I hope it works." he said. "I can't wait to change my size!"