06-15-2006, 07:47 PM
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Registered User
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Join Date: Jul 2004
Location: midwest
Posts: 637
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The sphincter is a muscle. If it got looser with use it would be the only muscle I know of that gets weaker as you use it.
Like Lilith said if you tear it that's a different story, but slow carefull anal sex shouldn't do that.
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