Felsus

Several months ago, Wally and I were in the van headed off to who knows where. He said, "Hey Felsus?" I asked what he said and he told me he called me Felsus. I asked what Felsus meant. He told me it means Felsus. He said it is what he was going to call me. I asked if he meant Fellas, he said no, he meant Felsus. He called me Felsus a lot for the next several weeks and slowly used it less and less. Some days he calls me that out of the blue.
I will never know why he chose that name or where he got it, but it always makes me smile when he does.