noun. Refers to the hour in the morning between breakfast and lunch when the hearty-breakfast crowd's sausage, eggs, and bacon finally make their way through the digestive tract. This usually results in a relatively short period of high restroom utilization.
The morning deuce power hour was fierce today! There wasn't an empty stall in the building at 10:30 AM. It must have been caused by the free breakfast tacos in the break room earlier.