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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).
Format: <algorithm>:<checksum|url>, e.g. checksum="sha256:D98291AC[...]B6DC7B97",
        checksum="sha256:http://example.com/path/sha256sum.txt"'
      - If you worry about portability, only the sha1 algorithm is available
        on all platforms and python versions.
      - The third party hashlib library can be installed for access to additional algorithms.
      - Additionally, if a checksum is passed to this parameter, and the file exist under
        the C(dest) location, the I(destination_checksum) would be calculated, and if
        checksum equals I(destination_checksum), the file download would be skipped
        (unless C(force) is true). If the checksum does not equal I(destination_checksum),
        the destination file is deleted.
    type: str
    default: ''
    version_added: "2.0"
  use_proxy:
    description:
      - if C(no), it will not use a proxy, even if one is defined in
        an environment variable on the target hosts.
    type: bool
    default: yes
  validate_certs:
    description:
      - If C(no), SSL certificates will not be validated.
      - This should only be used on personally controlled sites using self-signed certificates.
    type: bool
    default: yes
  timeout:
    description:
      - Timeout in seconds for URL request.
    type: int
    default: 10