Slang question

[Hall, Russell J]

I have no idea what it means, but the line was spoken in the Happy, Happy,
Joy, Joy song on 'Ren and Stimpy'

> -----Original Message-----
> From: Vince LeGrand [SMTP:vince-l at EROLS.COM]
> Sent: Monday, October 04, 1999 1:35 PM
> To:   Multiple recipients of list BOC-L
> Subject:      OFF: Slang question
>
> I know this is off-topic, but in the past this list has had threads on
> various slang expressions.  A co-worker received a note from a someone in
> the UK which included the following sentences:
>
> >A couple of documents I mentioned during our telephone conversation.
> >Apologies if you already have them and I'm teaching me grandmother to
> suck
> >eggs.
> >
> My co-worker (and I) aren't familiar with the phrase "teaching me
> grandmother to suck eggs."  Is this a UK expression?
>
> Any help would be appreciated.