Well whatever the connotation - I think its quite a good addition to,and enrichment of the English language.

Because

If you were writing a song about a woman with a squint - you would have a very good rhyme

The Bint/with a squint...

I wooed her with a tube of Polo
And extra chewy mints
But to my blandishmints she was deaf
She had heart of flint
She couldn't see it my way
Because she had a squint
Arthur Itis's fair daughter
The good looking sexy bint.

Of course you can argue that its not politically correct, but I feel it has something.