Poseidon (besides being the title of a disaster movie) was one of the Twelve Olympians in ancient Greek religion and myth. He was god of the Sea & other waters, earthquakes & of horses. 'Poseidon's on a mission, about to turn it up to eleven'. Later the lyrics says: 'Brave yourself for twelve!' saying the storm's already one notch past '10' so now get ready for another level entirely. I'm sure the "up to 11" part is a reference to Spinal Tap ("Up to eleven", also phrased as "these go to eleven" has become an idiom from popular culture coined in the 1984 movie This Is Spinal Tap, where guitarist Nigel Tufnel proudly demonstrates an amplifier whose volume knob is marked from zero to eleven, instead of the usual zero to ten).
Poseidon (besides being the title of a disaster movie) was one of the Twelve Olympians in ancient Greek religion and myth. He was god of the Sea & other waters, earthquakes & of horses. 'Poseidon's on a mission, about to turn it up to eleven'. Later the lyrics says: 'Brave yourself for twelve!' saying the storm's already one notch past '10' so now get ready for another level entirely. I'm sure the "up to 11" part is a reference to Spinal Tap ("Up to eleven", also phrased as "these go to eleven" has become an idiom from popular culture coined in the 1984 movie This Is Spinal Tap, where guitarist Nigel Tufnel proudly demonstrates an amplifier whose volume knob is marked from zero to eleven, instead of the usual zero to ten).