[jQuery] about :not(:last)

[Garito]

Hi!
Please, consider this code:

$.fn.url2 = function(absoluta) {
                var slots = $(this).parents('dl:not(:last)').map(function() {
                        return $(".Texto:first", $(this)).text();
                });
                var slots2 = $(this).parents('dl').map(function() {
                        return $(".Texto:first", $(this)).text();
                });
                return slots.get().join("/") + ' -- ' + slots2.get().join("/");
        };

The funny thing of this code is that slots and slots2 have the same
items
Could you point me why slots put the last dl?

I suppose that dl:not(:last) retrieves all the parents except the last
one but this don't work

Thanks!