Are the tears in her eyes from abuse or are they tears of joy? Does the "No. No.No." you hear really mean she wants you to stop or never stop? You will really only know these answers until you've been there yourself or watched these vids!
http://www.mediafire.com/?n1denlqj2im Features the training of Alice to a subserviant lifestyle that means she never has to say "No' again.
http://www.mediafire.com/?nqgyjtz4zmm Features a young lass getting ready for the prom, but her uncle has reservations about how she's dressed. At least for him, she overdressed.
http://www.mediafire.com/?mml5nf2ezoz Multiple girls and even more guys at the same time can turn aggresive. In the begining these two girls were all smiles when they were each getting one dick. Somehow those smiles lessened when numbers 4 & 5 lined up.
http://www.mediafire.com/?mt3jydgxqij Blondes always have more fun! Sometimes it's more fun than even they imagined.
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Personally, I prefer, when watching a girls eyes roll back in their head just at the point of orgasm, they are breathing. But it's their option.