Some of my favorites...
1. A woman on a couch masturbating to porn: yuvutu.com/index.php?name=Video&op=view&video_id=140729
2. Masturbating in her car (very realistic! I've done this a few times): yuvutu.com/index.php?name=Video&op=view&video_id=158700
3. Pushing her pussy down hard all over her pillow to cum: yuvutu.com/index.php?name=Video&op=view&video_id=111231
4. And, of course, masturbating at the computer! This is what a lot of us ladies look like right this second
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I think I like these so much because that's actual, real female masturbation. It's not some crazy blonde girl with 3 inch long nails moaning before she even touches herself, lol.