When I (a man of 50) picked up my prescription for viagra ( I use it because sometimes I suffer from erectile dysfunction), a good looking elderly woman, I suppose near 70, at the pharmacy stood next to me. Outside the pharmacy she came to me and asked me quietly if they really work. I told her that if they didn't work they wouldn't sell so many. she winked at me and said she would be very happy if she has an demonstration. Well, she got her demo, what a piece of a 70!