Related:

• You know you've been hacking too long when... ...a friend asks you what you're going to do later and you answe
  cd $HOME; mkbed; sleep 28800...
• You know you've been hacking too long when... ...you can remember your ethernet hardware address.
• You know you've been hacking too long when... ...your friends who aren't hackers wonder what happened to you.
• You know you've been hacking too long when... ...you fumble dialing the telephone, and make a stab for the backspace key [and wonder why the numbers aren't coming up on your screen].
• You know you've been hacking too long when... ...you go to lunch and there are no forks at the cafeteria, to which you exclaim
  fork(): no more processe...
• You know you've been hacking too long when... ...you go to the movies and it takes 5 minutes to get used to the flicker.
• You know you've been hacking too long when... ...you ask someone if they'd like to go get some "TeX-MeX" food.
• You know you've been hacking too long when... ...you decide to stay in school.
  ..just to keep your Internet account!...
• You know you've been hacking too long when... ...you look at an internal telephone extension number 2444 and immediately try to work out what permissions it represents, and then wonder why it's sgid!