a book which tends to be read by middle aged women
usually a soppy romance
with lots of drama
and causes a mid-life crisis
such as 'the notebook'

Tendency for users new to Facebook (generally age 30-50) to completely reassess their lives after comparing themselves to the Facebook profiles of people known to them only in high school and college. May trigger some individuals to believe that the newly discovered and superficial Facebook interactions with former friends means that they are now friends again in real life - despite the fact that there has been no desire for contact for the past 20+ years. In severe cases, those afflicted with a Facebook mid-life crisis may attempt to recapture their perceived glory days of high school and/or college by trying to get back to their prom weight, attempting to date a past high school crush, or setting up a drumset in the basement.

When playing a video game, getting really close to losing a life but making a miraculous comeback.

when a person (more commonly a man than a woman, but either can experience this fate) begins to question their purpose and direction in life and oftentimes begins to regress back to their teenage years in the way they think and act. they usually are laughed at by their peers because they make themselves look silly by acting much younger than they actually are.

when you and a less talented friend go skiing/snowboarding and when you go down the hill, your friend goes first and you wait for them to wipe out somewhere in the middle, referred to as their "mid life crisis" to go down after them to avoid crashing into them.

A sub-species of douche between the ages of 30-45, usually divorced. While this particular douche may have once been a decent human being, the onset of a Mid-life Crisis leads to increasingly douchey behavior and eventually, the transformation into a total douche. The Mid-life Crisis Douche will often begin drinking excessively and/or doing a large quantity of illegal drugs and will sleep with or attempt to sleep with much younger women in order to recapture his youth. He will also become obsessed with the gym and will begin buying expensive, tight fitting clothing to show off his "new physique." He will also have an increasing need to be the center of attention; especially when intoxicated. He often uses humor to gain the attention of those around him, and he often resorts to making jokes at the expense of others to distract himself from his own crippling insecurities. The Mid-life Douche can be spotted in clubs dancing awkwardly next to much younger girls, or in a local bar drinking excessively, laughing at his own jokes, or telling stories of his "conquests." This is a degenerative condition. Once someone begins the slide into Mid-life

You are considered to have a "Mid Life Crisis" when you have had a nervous breakdown between the ages of 30 and 60

See also One Eight Life Crisis and Quater Life Crisis