The most absolute greatest person in the world. Men want to be him, and women want him.
guy- That's conna, I wish I was him.
girl- I want him.
A conna is a 'mamas boy' as far as the term can stretch.
'Wussy', 'Mump', 'Tit', 'Leeroy'.
To call someone a 'conna' is to call someone a hybrid of the above.
Conna was a 'conna'.