A point in time where it is very late at
night, but you
don't want to go to bed because you feel like you have more to do in the day. Anything - whether it be writing, browsing the internet, trying to practice a song, or just flicking through the
TV - is more appealing than going to sleep, even though you know damn well that you need to go to bed.
When it's 25 or 6 to 4, your only option may be to say "fuck it" and go to bed. Then, however, you will feel like you are bound to miss out on
whatever assuredly awesome thing you would see or do if you stayed awake.
"25 or 6 to 4" refers to the exact point in time when this tends to happen - around 25 or 26 minutes until 4AM. Named after a song by
Chicago.