also known as "taking a twilight", this happens when you arise in the dead of night to take a dump. although the exact parameters of the "twilight" are disputed, it most commonly occurs between 3am-5am. not only is this the most tranquil time to deuce, it also saves time in the morning as no deuce is needed.
although holst had been sleeping for roughly 6 hours, he arose from slumber and the pressure was so great, it couldnt wait until morning. he had to rise from bed and take a twilight deuce.