Family meating

You sat wrapped in a towel on your parent's bed, tail still flopping with your sister next to you, also with a towel and a tail. You had your private parts covered but everyone had seen them as you got out the bath. Your mother and father stood either side of you with your two brothers facing you. Everyone had come to see what the screaming and shouting was about and now the cat was out of the bag.

"So we are all mermaids then." Ruben, your sick brother asked.

"No I'm a mermaid, your siblings are half-mers. You and your brother inherited siren genes from my great grandmother. You have charming voices." Your mum explained. She turned to you "Unless you want to look after two babies then I suggest you use protection next time." she said in a tone that was half scolding half informative."

"So their not grounded forever for having sex?" Edward the middle brother asked.

"No I don't blame them, it's just biology but Peter should know to use protection." Your mum replied.

"What do you mean charming voice?" Ruben asked.

"Well I have never seen it in action but my mum told me that if you were to sing a song while concentrating on one person you could weave commands into the lyrics for them to follow. Full sirens can do this to larger groups of humans but for someone with a passed on siren gene, it is weaker." You mum explained.

As she answered more questions that you already knew the answers to your tail, and your sisters began to change back into human legs.

"So you can just change whenever and are all having sex with each other." Edward incorrectly summarised.

"No saltwater has to cover most of the body and your siblings need to have their head dunked." Your mother corrected. With this clarified the family meeting was drawn to a close. You had wanted to keep your secret a bit longer. You also wondered if you had managed to knock your sister up with just one load. You doubted you would get another unprotected chance. Two babies would be hard to deal with however thining about it was turning you on. It would be worth it to see your sister and mother with bulging bellies and long tails sharing their bath with you.