If you are or consider yourself to be married to more than one person.
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...
its from friends