Smart Old Lady

Last year I replaced several windows in my house. They were the expensive double-insulated energy efficient windows. This week I got a call from the contractor complaining that the work has been done for a year and I had failed to pay for them.

Boy, oh boy, did we go round and round. I told him no one pulls a fast one on this ol' lady. Even though I am a senior citizen and used to be a blonde,
doesn't mean that I am automatically stupid! I proceeded to tell him just what his salesman told me last year:

"In one year they will pay for themselves"