I need to pee, but I’m distracted looking at lesbian porn and start stroking myself through my knickers. I suddenly recognise one of the girls as my step-daughter. I forget about my full bladder and phone my step-daughter, telling her what I found and asking her to explain herself. Leaving the video running, I start to stroke myself watching, even while telling off my step-daughter. Suddenly, I realise that I have to pee very badly and start to pee uncontrollably in my knickers. I tell my step-daughter exactly what I’m doing. Looking at my puddle, I feel very embarrassed, but very turned on. I start to stroke my wet knickers when I notice the girl in the video is peeing through her panties onto my step-daughter in the video. I suggest that maybe my step-daughter could come and re-enact the video with me and maybe I could show her what happened to me…