[lbo-talk] "tool" as insult?

[Michael Smith]

On Wed, 12 Sep 2012 11:18:42 -0300
Fernando Cassia <fcassia at gmail.com> wrote:

 
> One who lacks the mental capacity to know he is being used. A
> fool<http://www.urbandictionary.com/define.php?term=fool>.
> A cretin <http://www.urbandictionary.com/define.php?term=cretin>.
> Characterized by low intelligence and/or self-steem.
> "That tool dosen't even know she's just using him."

I suspect folk etymology here.