How Old Is Old Poem by Jan Oskar Hansen

How old is old?
Was it a mistake or am I the clown in a serial TV drama,
an actor not needed for the plot but is kept on out habit,
poor sod can`t remember his lines sitting with his pint in the corner.
One day he will be gone, and other actors will talk
about his kindness, The Guardian may show clips
when he had a leading role in a play 40 years ago.
So how long is a lifetime? I don`t know, will not
know, but I would mind a by-line or two