I've only experienced SP once that I can remember. I broke my arm snowboarding and I was on some Hydrocodon. The first day, after they set my arm in the cast, I was really drowsy and drugged up. I took a nap on my bed in my dorm room and then I saw a student come into my room making a creepy smiling face. I didn't know him personally, but I knew who he was. I couldn't move and I was scared so I started cussing at him and telling him to get out. After I woke up, I wasn't even sure if it had even happened. I think I was hallucinating b/c of the drugs and stuff. It was weird. I've never had any SP naturally though.