I think it's more a contrast in who we adopted our accents from.
She used to hang around with a lot of people who basically spoke 'mockney' before the term was coined. That sort of "Saarf Laahndun" accent, and she really used to lay it on thick when she was around some of them. She's grown out of it now, thank god, but she still speaks with a slightly dumbed-down sounding accent.

I, on the other hand, had Radio 4 for company at that age.
(LongJohnBaldry, Mon 18 Oct 2010, 17:34, 2 replies, latest was 15 years ago)

Ah, I see.
Sister isn't incredibly strongly Manc, just a lot more than I am. Maybe it's the Radio 4 in my childhood too.
( Lampito rise with the moon, go to bed with the sun, Mon 18 Oct 2010, 17:37, Reply)

So, you sound like Sue MacGregor, then?

(Cave Duck, Mon 18 Oct 2010, 17:38, Reply)

He sounds exactly like the sort of person who'd call you a cad and a bounder.
AND HE DOES.
( Lampito rise with the moon, go to bed with the sun, Mon 18 Oct 2010, 17:39, Reply)