function strplural ( $singular )
{
	if(!is_str($singular))
	{
		throw new IncorrectArgumentException('Argument 1 ($singular) of strplural() must be a string.');
		return false;
	}
	list($singular) = explode(' ', $singular); // get rid of unwanted other words
	if(substr($singular, -2, 2) == "us")
	{
		$plural = substr($singular, 0, -2) . "i"; // cactus -> cacti; fungus -> fungi
	}
	elseif(substr($singular, -1, 1) == "s")
	{
		$plural = $singular . "es"; // ass -> asses (donkey of course); loss -> losses;
	}
	elseif(substr($singular, -1, 1) == "z")
	{
		$plural = $singular . "es"; // buzz -> buzzes; :S
	}
	elseif(substr($singular, -1, 1) == "o")
	{
		$plural = $singular . "es"; // potato -> potatoes; volcano -> volcanoes;
	}
	elseif(substr($singular, -1, 1) == "y")
	{
		$plural = substr($singular, 0, -1) . "ies"; // lady -> ladies; cherry -> cherries;
	}
	else
	{
		$plural = $plural . "s";
	}
}