Here's what one of my servers has on it:
AddType text/x-server-parsed-html .html
AddType text/x-server-parsed-html .htm
RewriteEngine on
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^
http://cgcf.com.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://www.cgcf.com.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://co-edsgonewild.com.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://www.co-edsgonewild.com.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://coed-dorm-rooms.com.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://www.coed-dorm-rooms.com.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://exgo.com.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://www.exgo.com.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://girlsgonewildtgp.net.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://www.girlsgonewildtgp.net.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://kltm.com.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://www.kltm.com.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://ktej.com.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://www.ktej.com.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://pjfan.com.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://www.pjfan.com.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://pornoisseur.com.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://www.pornoisseur.com.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://pussylicking-lesbians.com.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://www.pussylicking-lesbians.com.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://sexpiate.com.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://www.sexpiate.com.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://sexponent.com.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://www.sexponent.com.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://smutbandit.com.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://www.smutbandit.com.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://wwedivass.com.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://www.wwedivass.com.*$ [NC]
RewriteRule .*[Jj][Pp][Gg]$|.*[Gg][Ii][Ff]$
http://smutbandit.com
Just change the domains to your own
HTH