Anus
From Science Encyclopedia
| WARNING: THIS ARTICLE MAY CONTAIN SMALL TRACES OF SEMEN. Anyone with a receptive vagina should proceed with extreme caution. |
The anus is an opening to expel fecal matter from the body. In humans it is kept closed by the sphincter, a ring of muscle surrounding the anus. From the anus originates also the humorless fart.
The anus is the orifice used for anal sex and is then a collector of semen or std.
Humans talk with their anus, while most animals eat with their mouth. See protostome and deuterostome.
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Pointless Biological knowledge
Interestingly the mighty flatworm does not have an anus. Instead it just has a mouth. With this 'mouth' it both eats and defecates.
