Common words from your childhood,that woukd have to be explained to your Grandchild.

poultice - some sort of hot mush (possibly made from stale bread and hot water) which was put on your chest to cure a cold??

Sugar and butter for a sore throat

Reverse charges when making a phone call

Petticoat showing?
It's raining in Paris.

Button A and Button Below in a public phone box. Actually, public phone boxes in general. We've just had the last one in our area removed.

Button B not button below fgs.

A joke not understood now:

'What do you do if you are chased by a herd of elephants?'
A: - 'Dial Trunks and reverse the charge!'

Halfpenny

The first joke I remember hearing ( I think I was about four at the time) was "when is a door not a door? - when it's ajar" It took me years to understand the pun, and even then I didn't think it was that funny.

Remember the party line on the phone. The line was shared with a neighbour, and you couldn't make a call if she was using her phone. But it was cheaper than having a line all to yourself. Now even kids have their own phones...

Fortnight

Threepenny bit
A tenner (6d)
Half a crown
Ten Bob
Halfpenny
A florin
Tuppence

Navy blue school knickers with a pocket. Ladies bloomers.

Farthings.

I was helping at an old people's day centre, some years ago. In a quiz, they were asked "How much was a crown worth?" Blank looks all round.
So I asked " Well, how much was half a crown?" Instantly got the answer 2/6 so a crown must be 5/-.

I used to have a badge proclaiming 'I'm an £sd addict.'

Ewbank carpet sweeper

'Toni' home perm..

Seeing what's on 'The Box' when putting the tv on.

Spotted Dick

Green soft soap

Shanks' Pony

Starch for clothes.

Counterpane
Bobby socks

Fluorescent socks