My university had terminal labs in the early 90s, tables full of Wyse terminals hooked up to the central UNIX cluster. PCs and Macs were common in other labs, but a terminal lab was still a convenient place to check email or get on IRC between classes. I would log into two terminals next to each other in order to have a screen for IRC while coding on the other one.

One early morning, I walked into a lab that was vacant except for one person. He was slumped over the keyboard with a hand around an empty Coke can. The amber screen was scrolling upward every few seconds:

  YOU ARE HUNGRY...
  YOU FEEL TIRED...
  > 
  YOU ARE HUNGRY...
  YOU FEEL TIRED...
  >