Mum joins in. It is filed under taboo incest, and runs about 1600 words. 4.0 out of 5 from 202 readers. Part 2 of Stormy Times.

Others under taboo incest Older Sister's Embrace, My Lingerie-Loving Sister Moves In and 2 Moms, 2 Sons... Ch. 5, and 9 more.

Or keep going.