A sundunker is an offshore northerly Fierce Wind in Saint's Barbs, Calvefornica. When it occurs, it pushes the sun away from Calvefornica, casting the Burgburger state in immense darkness. This does not affect any other region. If a person were to step across the Calvefornican border and back, they will see the astonishing sight of the sun being pushed and pulled back from the depths. If a person were to stand idly in-between the border, said person would explode. Sundunkers are particularly dangerous when Calvefornica is not in wildfire season, as the numerous wildfires will not light up the dark night sky. The Colossal Blackness's destruction has been blamed on the sundunker winds.