In "The Prodigal Son" there are two nameless brothers. The elder brother stays with his father to work the land and stay close to God, while the younger brother asks for an early inheritance and leaves his father and brother in search of his fortune. His "riotous living" lasts until his money runs out and a famine hits the country, driving him first to work at pig farm and then eventually back to his family.
Prodigal means spending money recklessly or giving lavishly, and in the parable the younger son fulfills both definitions. After spending his inheritance, he returns home offering himself to his father as a servant.
‘Father, I have sinned against heaven and against you. I am no longer worthy to be called your son.’
His father sees his son "was lost and is found" and so he rejects his offer and welcomes him back into the family. In celebration the father orders his servants to kill and cook his fattened calf.