Keith looked at his other two male friends and said, "If it's all right, I'd like to go next."
"Okay," replied Kat, who whispered the same incantation. Except this time, nothing seemed to happen.
Keith pulled off the costume tail and looked back to Kat. "Umm, nothing happened."
Kat smiled and gestured to the lake, "You have to get in the water. Mermen have legs on dry land."
"Oh, right." Keith jumped off the rock and ran towards the lake. The others ran after him, curious to see him change.
Keith pulled off his undershorts and slowly wandered into the water. He looked down and and saw his legs already changing, bright red scales pushing out. He felt his feet stretch out into fins. Once it was deep enough, he fully submerged into the water. Underwater, he felt his legs merge into a full tail. With all his might, he swan towards the surface, breaking through and flying up into the air, showing off his new tail for everyone to see.
The group laughed in delight at the sight. Dan let out a loud howl.