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Defecation is the final act of digestion process. As fecal material enters the rectum the rectal walls expand. The expansion of the walls causes a signal to be sent to the brain indicating an urge to defecate.

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14y ago
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15y ago

Coffee always seems to do it for me

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13y ago

all food...

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13y ago

papaya

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Q: What can you eat to make you need a poo?
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