I have no problem with an adult being called
Johnny. I do, however, prefer that
John is used for the birth certificate.
My rule of thumb: It's best to use the formal name on the legal documents (birth and marriage certificates, job applications, school certificates, even health records, etc.) and let nns like
Johnny or
Jack or Doodlebug or whatever evolve on their own.
This message was edited 4/25/2012, 3:11 PM