Possible Clues:

• Just a little R.A. in this in the bathroom
• Plumbing fixture and brief period of precipitation
• Meteors, en masse
• Plumbing fixture
• Scary 'Psycho' scene
• Might one be giving a demonstration of being just a little wet?
• Demonstrator's derogatory term for group
• Site of a classic "Psycho" scene
• One planting seeds interrupted by onset of heavy rain
• See 22