Possible Clues:

• Owt foul when flushed down the pan?
• In France, where tanned Foreign Legion officer leads women's release
• Unpopular philanderer knocked back, running away
• Amount of liquid moving away
• Issue from available supply
• Stumped, perhaps, following minimal level in discharge
• What's discharged
• Stream barred return of predatory beast
• Gush, outpouring
• Outward current