Bionic Legs

My kid's pediatrician is wonderful.  When I was pregnant with Andrew my water broke when I was 34 weeks.  Because he was considered a "preemie" there was a whole team of medical professionals in the delivery room.  One of which was Dr. D.  He was the pediatrician on duty that night.  He came up to me and pulled down his mask and said.  "Hi I am Dr. D.  Don't worry, I have done this six times.  I have six kids."  Of course I was in the heat of labor and did not find it very funny.  Anyway Andrew was quickly taken to the NICU after birth.  Dr. D ran back to the delivery room twice to let me know how Andrew was doing.  Darin and I was so impressed with him that we decided to have him take care of Andrew.  He's known Andrew since minute one.  Something special about that.  Anyway we later found out we live two blocks from each other!  Both the boys look forward every year to trick or treating at Dr. D's.
Now onto today.  Dr. D is having his knees replaced.  I explained this to the boys.  They were quit intrigued with the process of getting new parts.  Dr. D referred to them as "bionic knees".  Alex was really excited about this and could not wait to tell my husband about the bionic knees.  Alex ran up to my husband and said "Daddy Dr. D is getting robot legs!  And he is going to walk like this."  Alex proceeded to do his best robot walk for my husband.  Then from the other room Andrew yells "He's not getting robot legs Alex!  He's getting bionic knees!"  They are too funny!!!  LOL!