My twin sister and I are third generation twins (our father has a twin sister and our maternal grandmother is an identical twin).  When my own twins (boy/girl) were born, my sister was in the waiting room while I was in the operating room.

When I was taken back to my room and my sister and mom joined me, my sister asked me what time the twins were born. When I told her the times she and my mom shot each other a "look. " Then my mom told me that at the moment the first baby was born my sister had grabbed a stranger's arm in the waiting room and announced that her sister had just had a baby.

Apparently the twin ESP is true because there is no way she could have known this from where she was.

On a different twin subject, I filled out the twin questionnaire and where it asked for me to select either identical or fraternal, I couldn't choose an answer because I don't believe my sister and I fall into either of those categories. 

When we were born we shared a placenta, but we have different blood types - the doctors dissected the placenta to see if it was fused and it was not.  I have been told that there is a name for this type of twin but I have no idea what it is and would like to find out if that's true and what it is. 

Rhonda