look up any word, like blumpkin:
extremely bad breath; usually results from when one has not consumed food within an extensive time period. The odor is often hard to describe for it doesn't resemble anything- just smells bad...

Girl : " You must not have eaten breakfast right?"
Boy: "yea...how did you know"
Girl: "Because you are SO Keytonic right now"
by Naia B. January 25, 2006