I had never thought of it as such, but I believe I have experienced some sort of time slip. Back in my college days, there was a very beautiful young woman that I had seen regularly on campus. I have never seen anyone who looks her, so she stood out. One day, I noticed her in one of my classes, which had over 100 students in it, as it was a required course for all students. The class was mostly freshmen, but there were also transfer students, of which I was one. I did not notice her in the class until the course was just about over. During finals week, I ran into her at the student center and actually spoke to someone I knew that was talking to her, just to get a closer look. Due to some rather strange circumstances, I actually ended up getting set up with her, in a blind arrangement. I got to know her rather well, and realized that she should have not been in that class. I eventually asked her about it, and she verified that she was not in that class. There were quite a number of odd ocurrences during the time I knew her that still puzzle me.