"If you join me I will ensure you will enjoy it."
"Join you for what?" You reply.
"As my consort of course!" She answers giggling. "So what is you answer?"
"Why not!?" you reply.
At that, the mermaid holds up her hands and a ball of energy forms within them.. It shimmers and takes the form of a golden starfish. The beautiful mermaid lifts the starfish to her lips, her bare breasts heave as she takes a breath and blows it at you as she winks seductively.
The golden energy floats through the air and strikes you on the chest. Looking down, you see what looks like a starfish tattoo where it hit you, and you feel a warmth eminating from it.
You suddenly know that you belong in the water so you strip off your clothes and dive into the pool to join your new friend. You only tread water for a few seconds with your old legs as you feel them lose their rigidity.. From the sight of the mermaid and your own physical transformation your penis is rock hard.