Mermaid walks by

Suddenly out of the woods walks a lady with silver hair, nails and lips. She looks at me and smiles Her hair flows down to her firm round ass as she walks past me.
She has a swaying motion that is all most hypnotic. She is wearing a t shirt and skirt both of spandex with rainbow scales on them.

 "If you like to swim in my lake you are more than welcome.  Though I do charge a fee to swim.  If you can make my legs cum so hard they turn back into the fish tail they were before.  Than the lake and its magic is all yours for your use.  So do you want to have some fun trying?"  The mermaid asks with a grin as she begins to play with her own large breasts.