Mermaid in the bath

In the bath was my mum, naked and with a long red fishtail instead of legs that was flopping over the edge of the tub. “Peter, I’m sorry, you use my special salts I couldn’t resist.” She apologised as if that explained everything. She moved her long brown hair out of her face and rolled over on to her stomach. This moved her exposed breast and vulva (that was just above her fish half) underwater, obscuring them but not before you had got a look at your mother’s naked body. Her tail also moved running up the slope of the tub to stick up out the water with the fluke flopped back down. Although her lower half resembled a fish, her fluke was horizontal like a dolphin.

I still stood there clutching my towel staring at my mother and her impossible body. “What? How? But…” I stammered.

“Isn’t it obvious, I am a mermaid. I transform like this whenever I enter saltwater. I have to do it once a month or I will get sick, so I keep special salts in my bathroom cabinet. Whenever I am around saltwater, I feel compelled to swim and let my natural from show.” My mum explained.

“But the beach.” You stammered

“At the beach, I expect saltwater and know to control my urges, but I did not expect that you would use my bath salts, I could not control myself. Sorry I stole your bath. The tub is big enough for two if you want to join.” She added.

“But you're my mum!” I protested.

“Merfolk spend their lives naked. I gave that life up to be with your farther, but I do miss it.” She explained.