Slack-jawed
A more recent term for a person who is "Slack Jawed" is a "Mouth Breather". That is, they carry the witless or thoughtless expression of having their mouth open.
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- PLEASE don't erase previous posts Bob 08/November/03
A more recent term for a person who is "Slack Jawed" is a "Mouth Breather". That is, they carry the witless or thoughtless expression of having their mouth open.