Friday was born in Dublin and grew up in Ballygall, a neighbourhood located on Dublin's Northside located between Finglas and Glasnevin where he went to school. When he was fourteen years old and living on Cedarwood Road, he met Bono and Guggi at a party to which he had not been invited. Bono said: "We caught him trying to steal something of the house. Classic teenage stuff... but we became friends.