Overcoming Farnarner

We have been threatening Billski since Andi found out she was pregnant with Sophie that if he did not come up with a name he wanted to be called by the grandkids, we would just call him Farnarner. Sophie is 18 months old and still no name -- so she took care of it herself.
Sophie has declared Billski to be BaBa. No idea why, but he is now BaBa.