Her stepson was infatuated, but she had to finish her math homework, because arithmetic and sex don't mix well. However, she didn't mind that he could get away with anal sex because it didn't divert her attention the way a vaginal orgasm would.
The author received a surprise gift from their redhead step-sister, who sucked their untrimmed penis in a missionary manner. They then acted cowgirl and reverse cowgirl on them, allowing their dick to glide inside her tight ass for a backwards anal ride. The video captures the experience from multiple angles.