Why I've never really got Cockney Rhyming slang

[Rich]

I introduced my young lad to the concept of rhyming slang in preparation for an imminent visit to London, the city of terror as such.

Given his age names such as Gregory Peck and Ruby Murray were utterly meaningless, the concept of a syrup of figs was redundant and I could not even explain why a monkey was £500.

In summary a disaster.

The whole concept needs modernising.

What other monetary equivalents are there? Am I right in saying that a bag of sand is £1000 (a grand)?

[barrybueno]

What other monetary equivalents are there? Am I right in saying that a bag of sand is £1000 (a grand)?

Ive always liked that one, dont get much chance to say it these days

Theres Cock and Hen and Lady Godiva, Ive never understood why a pony is £25 tho...