a supposedly true story from:
Bermant, G. (1976). Sexual behavior: Hard times with the Coolidge Effect. In M. H. Siegel & H. P. Zeigler (Eds.), /Psychological Research: The inside story/ (pp. 76-103). New York: Harper & Row.
One day the President and Mrs. Coolidge were visiting a government farm. Soon after their arrival they were taken off on separate tours. When Mrs. Coolidge passed the chicken pens she paused to ask the man in charge if the rooster copulates more than once each day. "Dozens of times," was the reply. "Please tell that to the President," Mrs. Coolidge requested.
When the President passed the pens and was told about the roosters, he asked, "Same hen every time?" "Oh no, Mr. President, a different one each time." The President nodded slowly, then said, "Tell that to Mrs. Coolidge."