the red bull hour
That time of day when, all of a sudden, your pet, or a person, gets a sudden, almost volcanic, burst of energy. The red bull hour does not require the consumption of red bull.
It always gets to be around 7pm when my dog Frank will hit the red bull hour and will run screaming around the garden like the devil is on his tail. After the red bull hour Frank is always ready to go to bed for the night.