Not the girls he was looking for!

"Oh god, Walter ... I'm wet like an aquarium!" The short one just groaned.
It came out in Frank's male baritone which made the whole scenery rather odd.
"I can relate, Frank! I mean, I am growing wetter 'down there' as well!" Walter said and motioned down on the leotard where a small wet spot was already showing.
"And you know what they say, slippery when wet!" he said.
"Looks like these bodies agree with us. This is hot." Frank said but just then was interrupted by a guy of average height and dirty blond hair.
He looked directly at Frank and spoke. "Hey Macy," he then turned to Walter, "hey Ivy. So... Ivy, I was wondering if maybe you'd... I don't know..." Suddenly, his eyes snapped down to the growing visible wet spots on each of their crotches.
"What the... Are you two wet? Wait, what were you doing here, all alone?"
The 'girls' simply smirked and began to change up their casual poses. 'Ivy' began to slowly unzip her leotard, showing ample cleavage and 'Macy' turned around and started to bend over from the waist, showing the boy a toned, round teenage ass.
"Woah! Macy, that butt is magnificient!"
"Why thank you..." 'Macy' spoke with Frank's voice, causing the boy to recoil in shock.
"Macy? What the hell!" The boy began to back away, terrified of what just occured.
However, 'Ivy' spoke up in Walter's voice. "Well, I think you have figured out that we are not the girls you were looking for!"
"But... Who.... What are you?" the boy asked.