Run a free scan at http://usa.kaspersky.com/products_services/free-virus-scanner.php
like anybody knows.
Only an idiot would think of some thing like that to say, shun you.
The I know song
I'll take a stab at it: This seems to mean that it is a high order of knowledge to have a sense of the limits of one's knowledge. Being 'smart' and 'informed' or 'savvy' is great, but being aware of...