A cloaca may
but a vent doesn't necessarily. Jackets often have vents, as do air-con systems.
Vents often have dummies too.
I prefer scientific nomenclature, e.g. 'chicken fanny '. I wonder what chickens call them?
(
finnbar has officially retired,
Fri 20 Mar 2009, 18:44,
archived)
ba-gerk!
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Zank Frappa Who let the lefties in?,
Fri 20 Mar 2009, 19:14,
archived)