A rumble in Brighton

I sit here in Brighton and rock to and fro,
My head on the cushion I watched my wife sew.
I sit of an evening, I ache and I creak,
And probably soon I'll be starting to leak.
This rocker was never in fights by the sea.
Excuse me a mo, I must go for a pee—

That's better. Where was I?—oh, yes, now I know.
I was never a rocker. I'd just go with the flow.
I wasn't a mod but perhaps I'll pretend:
I'll wear my old overcoat, restart a trend.
It's more Marks & Spencer than Crombie but, hey,
Would anyone notice the difference today?

But then, there's an M&S meal in the freezer.
There's no point denying: I'm just an old geezer.