Try this...you're missing a few crucial lines.
AuthUserFile /dev/null
AuthGroupFile /dev/null
RewriteEngine On
RewriteCond %{HTTP_REFERER} !^http://premierepussy.com/ [NC]
RewriteCond %{HTTP_REFERER} !^http://www.premierepussy.com/ [NC]
RewriteCond %{HTTP_REFERER} !^http://id.adultcheck.com/ [NC]
RewriteCond %{HTTP_REFERER} !^http://www.id.adultcheck.com/ [NC]
RewriteCond %{HTTP_REFERER} !^http://.+\.avsofchoice\.com/* [NC]
RewriteCond %{HTTP_REFERER} !^http://.+\.cyberage\.com/* [NC]
RewriteCond %{HTTP_REFERER} !^http://([a-z0-9-]+\.)*agecheck.com/ [NC]
RewriteCond %{HTTP_REFERER} !^http://www.tokensystems.com/* [NC]
RewriteCond %{HTTP_REFERER} !^http://tokensystems.com/* [NC]
RewriteRule /*
http://www.domain.com/enter.shtml [R,L]
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