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Hanham's law states that defecation for males is only complete following:
1. Colon is purged of all fecal matter
2. Following the purging of the colon, a small volume of urine is passed. This is due to the prostate no longer exerting pressure on the urinary tract as when the colon was full.
Failure to wait for the completion of step 2 can result in rectal discomfort, small bits of urine in the one's underwear, and the general feeling of an unsuccessful poo.
Following a particularly hasty poo, Kevin felt tension and discomfort in his rectum throughout the entire meeting because he forgot to follow Hanham's law.
by tickles mcgee June 29, 2013
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