Related Clues:

• As easy as falling off ___
• "...as falling off ---"
• Not under
• In the saddle, e.g.
• On the pinnacle
• Having surmounted
• Sitting upon
• Word after "perched," often
• Piggybacking on
• Word after "high," often
• Sign denoting that something is perched on something else?
• At one's peak?
• Using as a perch
• Superimposed on
• In a dominant position