User-agent: *
Disallow: /images/
Disallow: /cgi-bin/
 
User-agent: Googlebot-Image
Disallow: / 

RewriteEngine on
RewriteCond %{HTTP_USER_AGENT} ^Mozilla/5(.*)Twiceler
RewriteRule . http://www.cuill.com/your_bot_sucks [R=301]

User-agent: Twiceler
Disallow: /