Theo wrote

I was in the reduced aisle in Aldi,

You buggers. Ours only has a couple of the pallets of those.

and noticed the sign on a bin saying 'copper clutch'.

You're doing it the wrong way round. You're sposed to look at
the stuff and only look at the label if it isnt obviously what it is.

Ooh, I thought, I'm sure that'll come in handy for some
mechanical project or other. But I couldn't seem to find any.

Then I realised it's a type of handbag.

You could obviously get a sex change.