Last year I replaced several windows in my house. They were the expensive double - insulated energy efficient windows.
This week I received 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 that no one pulls a fast one on this Ol' lady, even though I am a senior citizen and 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..."

i think i just might use that one