G-chatting as you are falling asleep, resulting in mostly incomprehsnsible half thoughts and many typos. Can also be seen on other chat / messaging applications.
When one is so utterly exhausted they decide to call it quits for the night despite the fact that they still have a lot more work to do. Though it provides temporary relief from stress, it typically screws one over the next day.
I still had half of my project to do, but it was already 2 in the morning, so I just commited sleepicide and decided to deal with the consequences tomorrow.