Stories where sisters rape their brothers! Dubcon or non-consensual. Always stories about sisters (big sis or little sis) seducing and raping her brother until he reluctantly fills her with his virile brotherly sperm!
Sisters Raping Their Brothers ~ Taboo Incest Erotica
Rumor around school is my big brother, Braden has a big penis. Even though I'm his little 18 year-old sister--and I know it's SO wrong--I've been SO horny thinking about my brother's big dick. So, I decided to trick him, tie him to my bed, and find out if the rumors are true. If it is, I'm gonna' fuck his brains out! And then? I'm going to force him to cum into his own fertile little sister! ;)