Unwanted Keywords

In Google Webmaster , there is a section called Keywords, that shows top 20 keywords that google found while crawling...

i was looking at those keywords yesterday, and they were insane ... those keywords are really really unrelated to my site content.

Take a look at the screenshot here:



so my question is, How do i remove these keywords or tell Google to ignore these keywords... and give me some better one?

Please see: Keywords in Google Webmaster Tools for Forum
There is an ongoing discussion on this topic there.