Posted by David FG on February 03, 2005
In Reply to: To be taken for a mug posted by Steve on February 03, 2005
: Hello,.. I appreciate your telling me the meaning and the origin of the above phrase. Thank you.
I think it means to be treated or thought of as stupid.
Brewer's Dictionary of Phrase and Fable suggests that it might come from the Romany for 'fool' or 'simpleton'.