they loved to tease each other. she and 41 were constantly laughing and often times it was an inside joke between the two of them. one of my favorite memories was not long after she had a heart valve replacement surgery and they actually used a pig valve to -- that they put in mrs. bush, and for the next few weeks any time 41 would walk in the room or see her, he would start snorting or oinking at her to remind her she had this pig valve. >> that sense of humor, kate, it helped them get through difficult times as well. >> it did. a lot of the butlers and maids were very close to the bushes. there were great stories where she loved being first lady and would come down to the basement in the white house with her robe, ready to go for a swim and check in on the cookie man. one time she left for a foreign trip and came back and the engine engineers were going to wash the