Possible Clues:

• Off the norm
• One whose behaviour is different from the norm
• Irregular source of water in extremes of drought
• Oddball
• Going astray through entering iniquitous place -- Thailand's capital
• Diverging from acceptable behaviour
• Departing from accepted standards
• Irregular green semicircle turns up on top of table
• Differing from considered acceptable behaviour
• Irregular drinker's shakes diminished when imbibing spa water