Its mostly to do with cars or projects and usually voiced by deeply objectionable people with no consideration other than for their dead eyed charisma free selves and their 'baby' ie a sports car or a boat or a fucking hatstand who knows? Why oh why oh why do they do this? I once supported a band once and offered to help them unload their 'gear' and the guitarist waived this offer with his amp as it was 'his baby and only I should carry it'. At least two of my band ensured that beer was tipped into it by the end of the night.
I have a baby, shall I call it my 'Rickenbacker 1959 classic'?