Returns human slang representation of time.

        Keyword Arguments:
            locale -- locale to translate to, e.g. 'fr' for french.
                       (default: 'en' - English)

def slang_time(self, locale="en"):
        """"Returns human slang representation of time.

        Keyword Arguments:
            locale -- locale to translate to, e.g. 'fr' for french.
                       (default: 'en' - English)
        """
        dt = self.datetime()
        return pendulum.instance(dt).diff_for_humans(locale=locale)