Computer program code, generally written by a person whos ego has the gravitational pull of the sun, that once read causes the reviewer to want to rip out their own insides.
A example of Vogon Poetry Code would be:
$id = 0;
while (!$id || mysql_error()) {
$id = rand(1, 10000000);
mysql_query("INSERT INTO `table` (id) VALUES ('".$id."'");
}