People like
@rickyb don't have the same definition of this term. Some of us know exactly what this means; others (like him) are a huge disappointment to their parents and then live in a rented room with a bunch of college students (that will leave him in their wake in a short time) and blame "society" for their own miserable existence.
When the college kids go home or on Spring Break or something, he will wake up one afternoon, be alone looking in the mirror at his bloodshot eyes and crusted puke in his mustache and realize that he may actually be a failure and the end will be approaching shortly at this rate.
Then he'll realize that life has dealt him an unfair hand and the list of responsible parties for his pathetic existence will be long and he'll consider revenge...
Then off to the fridge to forage for whatever leftovers the college kids may have left to sit in front of the TV and watch Scooby Do.