Hahaha..that was funny! Something similar happened when I was a student..I was collecting history and examining my patient who was admitted for surgery. And on physical examination..I saw the uterus was 'out'....my first time!! Since we were students..I wanted my friend to see the prolapsed uterus as well...I tried explaining to my patient (language barrier) and then went to call my friend, leaving the curtains still drawn around my patients bed..Meanwhile it seems like my patient went to the bathroom and got back..when we examined again..everything was 'normal'....I mean the prolapsed uterus was "missing'' .... I was shocked...I had to closely look whether it was the same patient...She must have understood the confusion on my face...so she explained that was 'Normal'for her... It was both scary and hilarious experience!!