How Does She Remember?

Today I was walking near my house and I saw a lady talking to her friend. This lady was fatter than the fattest. As soon as she saw me, she took one step forward and said, "Hi!"

I also said, "Hi!" and I raised my hand.

Then the lady was telling her friend, "I have been seeing this gentleman for twenty-nine years. He has been working so hard for the improvement of the world."

She was speaking very loudly, so I was hearing everything. I have seen this lady perhaps four or five times, but she has been seeing me for twenty-nine years. How does she remember the exact number of years?

26 July 1995