Aya's Cliff

When you are Agile and your local Aya decides to wake up from her everlasting, coma-resembling hibernation and finish the sprint in 4 hours instead of 3 weeks. Visually a burndown graph shows a square-shaped cliff dropping all the way to 0 on the y-axis.

Jesus, we just started our sprint today and we managed to a create an Aya's Cliff.