Bedroom, on the bed, night, dim light, room plunged in darkness, (very elderly 55-year-old great-grandmother:1.7), brilliant math professor seducing her stud, (riding like never before:4.9), (cheating on her husband:4.9), (secret affair:4.9), 18-year-old man, young man lying on the bed, orgasm with female ejaculation, (squirt), (sex, vaginal penetration, penis in vagina, woman being fucked, deep vaginal penetration, vaginal sex), (very big cock:1.3), (ejaculation inside the vagina, semen flowing from the vagina), ultra-realistic, explosive orgasm, rough and incredibly intense sex, rough fucking, vigorous and jerky penetration, (real nudity:4.9), (((curvaceous figure))), dark chestnut hair with light chestnut highlights, short layered haircut, very sagging breasts, incredibly realistic, spontaneous, (VHS:4.9), (analog:4.9), (raw:4.9), matte color palette, pale solid tones, no glare, natural movement, natural skin texture, natural motions, natural gravity, very low contrast, very low brightness, very low saturation, real body, retro, vintage, (view from behind:4.9), (very amateur style:4.9), (chance encounter on Tinder:4.9), side lighting, (she had never felt such a big cock in her vagina before, and the penetration is so deep it hurts, but it intensely stimulates her G-spot, triggering an immediate orgasm:4.9), static shot, (they are racing to see who will cum first:4.9)