This question came to my mind when yesterday my students were telling their 4-years stories and there were some very embarrassing ones from early semesters and still got the "victims" hiding their faces. Actually such a things happened in our cousins/childhood friends/school/university days (to anyone I guess) and often such a stories end up getting someone deeply embarrassed remembering that moment.
Suppose person A is in a reunion and such a story about him/her has been brought up during memories, how should one avoid it (assuming person A doesn't like such a story to be reminded back)