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##### SUMMARY
When I read the `copy` documentation, I couldn't work out what it meant.  Unfortunately, this meant it sounded like it might be a weird sex joke.

It doesn't sound like a big problem, but in an ideal world, I think we should prefer to avoid weird sex jokes in an alias for a parameter called `force`.

##### ISSUE TYPE
- Feature Idea

##### COMPONENT NAME
copy

##### ADDITIONAL INFORMATION
Issue search tells me "thirsty" was added as an option to the `get_url` module.  In that context, it is appropriate.  But in the context of the `copy` module, it does not make sense, because `copy` only works in the upload direction.

The first three pages of Google Search results (Ansible thirsty) show people using "thirsty" for downloads only, not uploads.  Similarly for GitHub code search (copy thirsty language:YAML).
if self._tmpdir is None:
            basedir = None
            if self._remote_tmp is not None:
                basedir = os.path.expanduser(os.path.expandvars(self._remote_tmp))
            if basedir is not None and not os.path.exists(basedir):
                try:
                    os.makedirs(basedir, mode=0o700)
                except (OSError, IOError) as e:
                    self.warn("Unable to use %s as temporary directory, "
                              "failing back to system: %s" % (basedir, to_native(e)))
                    basedir = None
                else:
                    self.warn("Module remote_tmp %s did not exist and was "
                              "created with a mode of 0700, this may cause"
                              " issues when running as another user. To "
                              "avoid this, create the remote_tmp dir with "
                              "the correct permissions manually" % basedir)
            basefile = "ansible-moduletmp-%s-" % time.time()
            try:
                tmpdir = tempfile.mkdtemp(prefix=basefile, dir=basedir)
            except (OSError, IOError) as e:
                self.fail_json(
                    msg="Failed to create remote module tmp path at dir %s "
                        "with prefix %s: %s" % (basedir, basefile, to_native(e))
                )
            if not self._keep_remote_files:
                atexit.register(shutil.rmtree, tmpdir)
            self._tmpdir = tmpdir
        return self._tmpdir
    def warn(self, warning):