If you are a male and between 40 and 60 years old and are feeling angry, impatient, blaming, dissatisfied, sarcastic, anxious, hypersensitive, unappreciated, tense or unloving you may be a POOG - Pissed Off Old Guy.

According to Jed Diamond in "The Irritable Male Syndrome: Managing the Four Key Causes of Depression and Aggression" a decrease in testosterone that comes with aging and the stress and loss of self esteem that occurs with other life changes such as divorce, job layoffs or illness can produce Irritable Male Syndrome (IMS) where that all around nice guy you used to be has turned into a Jack Nicholson character.

Diamond suggests seeing a doctor to have your testosterone levels checked, since low testosterone is a leading cause of IMS. Looking after your body also helps - balanced diet, reduce alcohol etc. the usual good stuff.

This may be a good thing for us guys, now when our loved ones get on our case for the myriad of things we do to piss them off we can can claim it's not our fault it's due to our physiologic deficiency. The hormonal playing field has been leveled.