A Kentucky man accused of strangling his wife is poised to claim excessive caffeine from sodas, energy drinks and diet pills left him so mentally unstable he couldn’t have knowingly killed her…

Woody Will Smith, 33, is scheduled for trial starting today on a murder charge in the May 2009 death of Amanda Hornsby-Smith, 28.

Defense attorney Shannon Sexton filed notice with the Newport court of plans to argue his client ingested so much caffeine in the days leading up to the killing that it rendered him temporarily insane — unable even to form the intent of committing a crime…

Reports and case records say during that time, he was drinking five or six soft drinks and energy drinks a day, along with taking diet pills; it all added up to more than 400 milligrams of caffeine a day.

Prosecutor Michelle Snodgrass said Smith tested negative for amphetamine-type substances shortly after the killing…

The Diagnostic and Statistical Manual of Mental Disorders — published by the American Psychiatric Association showing standard criteria for the classification of mental disorders — defines overdose as more than 300 mg. That’s about three cups of coffee.

More than three cups of coffee classifies you as loony, overdosed on coffee?

Har! That explains the behavior of half the geeks in the world.