Did you mean Va' fa' un culo, or vafanculo??
If so, it literally means "Go fúćk an á$ in Italian slang. For Americans it's used "Go fúćk yourself!"
"Von Fon Culo" is a term which when translated into English is "From Fon Culo"
I literally have no clue what the point of knowing this is.
I think you typed it wrong though XD
