Quote - 'Tool', in American slang, would signify useless or mindless.  It would also mean being taken advantage of or being used. 

Ah, I understand now. It's another word for 'president'. Dōmo, hborre-san.

"If I were a shadow, I know I wouldn't like to be half of what I should be."
Mr Otsuka, the old black tomcat in Kafka on the Shore (Haruki Murakami)