Milking the sperm with mum's sister

Normally it's always sex between aunt and niece on Saturdays, but when this would-be caretaker from the club turned up we couldn't hold back any longer and, as a family project so to speak, blew out the guy's bag cream and had our tits inseminated. If mum knew what kind of mess I was getting up to with her sister, I think she'd be in trouble.