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When u take a truly great dump, and when you get up to wipe your ass you notice that the pile is so big the top is higher than the water in the bowl, like an island 'breaking' above the water.
He: "Man, I ate so much Thanksgiving dinner yesterday I woke up at dawn and had me a righteous waterbreaker."

She: "I hope you flushed."

He: (Proudly) "Twice!"
by polkyarebusz June 11, 2006
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A penis so long and large as to elicit the fear of uterus penetration, even in non-pregnant women.
She's too petite to sleep with you and your water-breaker. That girl wouldn't walk right for a week!
by Dusticles McGee June 27, 2007
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