Lilly reaches for the shower knob and turns it. Water cascades over their bodies. Glistening even in the dull light, they drop to the floor and continue their passionate kissing.
Their hips seemed to be developing an odd splash of sparkling color. It travelled down their legs, which looked like they were merging together! Your refusal to admit the obvious broke only when you saw their feet flatten and flare out as they, too fused. They were mermaids!
You gasp; ducking back behind the locker for fear they heard you.
"Someone's here!" Alexis said.
"I'll flush them out." Lilly answered. "Come out and reveal yourself." Lilly said in a much more beautiful and melodic voice that seemed to echo inside your mind. You could not resist, and you heeded the command and approached the lesbian sirens.
"Are you enjoying the show?" Alexis asked in a similarly melodic tone.
"Yes." You were compelled to answer.
"I know a way you can enjoy yourself even more." Lilly said.