The Impenetrable Fortress

A countryman went into Dublin with his wife to see a gynaecologist, for they had no children, and the years were passing.
'Now,' said the doctor, 'what is the problem?'
''Tis me wife,' said the man sadly. 'She's unbearable.'
'Ah,' said the doctor. 'I see. But what have ye come here to be doing, then?'
'We need your advice, doctor,' said the man. 'You see, me wife -- she's inconceivable.'
'Yes, I see,' said the doctor. 'But how can I be helping ye?'
The man was getting frustrated by this and he turned to his wife. 'You tell him, darlin', what we've come for!'
'Sure,' said the wife. 'Can't ye git it, doctor? I'm impregnable!'