Talk about events

Colin - Did I ever tell you about my graduation?
Dean - No, when was that?
Colin - Oh, it was 20 years ago now. I've got some photos.
Dean - Oh, can I see? Were there many people there?
Colin - Oh yes, there were about a hundred of us.
Dean - Did you have a good time?
Colin - Yes, we did. We all had a great time. The best bit was at the end of the event.
Dean - What happened then?
Colin - One person toke the cake, and he threw to her english teacher. It was very funny!!
Dean - That sounds great!