[MarkFL]

A simple solution would be to create a plugin hooked at "newthread_forum_start" with PHP code such as:

PHP Code:

if ($foruminfo['forumid'] == XX AND !$newpost['message'])
{
    $br = PHP_EOL . PHP_EOL;
    $newpost['message'] = 'Age: ' . $br . 'Sex: ' . $br . 'Location: ';
} 


Replace XX with the forumid where you want this post template to happen, and edit the string to include your desired post template.