In the same way that San Fairy Ann came from the French Ca ne fait rein, I think calling something Ann Twacky as they do in Merseyside for something old fashioned, must come from the word Antique?
'Two sandwiches short of a picnic' for someone not all there.
'Well they won't spoil another couple' - usually said when looking at the wedding announcements in the local rag for a plain/ugly pair.
'Here's your hat where's your hurry?' said if you appear to be hurrying someone out of your house.
Where are you going on holiday? 'I'm going to Rome - roam around me back yard!'