You find a nice cool lagoon and decide to take a dip into the inviting water. Relaxing from the warm day and gently drifting off and you find yourself thinking of mermaids. Your cock twitching at the erotic thought. You can almost hear her humming. You open your eyes to see that lovely creature brushing her long dark hair upon a rock in the center of the lake. You swim quietly up finding yourself wondering how one makes love to such a creature. You take my brush and start brushing my hair as my body tenses at the scent of a man. Your fingers caress my neck and your lips brush it. Whispering, "I've never meet a mermaid before much less a sexy siren." Your lips playing along my neck you can feel my blood pulsing. I turn slightly towards you and you see my nice full breasts and your hands move to explore this new area.
I look at you and let your hands travel over my body and whisper, "I've never met a man." Your eyebrows raise and I glance down your body and remember it's different for humans.
You follow my gaze to your hard cock, "Are mermen built like me?"