When I was first born my cousin couldn't say Christopher so instead he said "Fistipher". That got changed to fiffider as I got older. When I was about 12 it got changed to Fiffy. I was out fishing 2 years ago when my brother in law was calling me fiffy. His bud thought that he was saying spiffy so he kept calling me that and it stuck, with everyone. Some call me spiffer,spiff, and even stiffy. So it could change again though time.