Empty carriage, only the rhythmic clatter and oral sex while on period. She locks the door, strips, and straddles the seat facing the window. Moonlight paints silver across her skin as she chants “oral sex while on period” in time with the rails. Four fingers stretch her open; the wet slap echoes louder than the train. “Everyone outside, see oral sex while on period come,” she gasps. The train enters a tunnel—darkness swallows everything except her rising “oral sex while on period, oral sex while on period, fuck, oral sex while on period!” until she explodes, soaking the leather in a flood of unstoppable “oral sex while on period” release.