No offence if this is your Nan

So, I was on the train today, after listening to a poetry reading and Q&A with Sophie Hannah, who is a really good poet actually, albeit slightly brash in her opinions, and I was in a poetic-ey, literature-ey frame of mind, if you will, when my bubble was burst by a everyday bolshy elderly lady. Despite the somewhat negative aura around this poem, it did actually make me laugh and I really enjoyed the journey home due to the oxy moron. To further the irony, Sophie Hannah then actually got onto the same train and sat opposite her and I was (symbolically?) sat between the two of them. So yeah, this isn't a metaphor:

She hushes her voice in stage whisper
As she dilutes my mind's epiphany,
Just moments ago I was melting away
In what truly this sweet world could be.
Of art and of love and of pleasure and
Of all sprinkles of relative sin,
That her passive gossip cannot father
Or to such beauty even begin.
Her coffee coated face was laced
With her self-diagnosed intellect,
Her visage promised penniless secrets
Of Betty, Marie or Jeanette.
So thank you for melting my dreamworld
With the tale of tapping the Milkman,
Despite this you did actually make my day,
No offence if this is your Nan.