Duplicate Meta Descriptions Help Please

[major48]

I have a Clip-Bucket site at www.twerkflix.com. I have been struggling with getting search engine traffic from the beginning. I think my problem is with duplicate meta description because google is going through my search queries on my site scanning the same pages several times. Does anyone know how I can fix this? I was told I could configure robots.txt to fix it but I am not sure what to do. Below is what I get from google webmaster tools

/
/contact
/page/1/about-us
/page/19/ad-with-us
/page/4/help-using-twerkflix
/photos/
/search_result.php?query=Apple+Watts&type=videos
/search_result.php?query=Ass+Shaking+Twerk&type=videos
/search_result.php?query=BBW+Booty&type=videos
/search_result.php?query=BBW+Superstarxxx&type=videos
/search_result.php?query=Butterflymodels+presents+UK+Twerking+with+Purple+Cherry+London&type=videos
/search_result.php?query=Dat+dam+Juicy&type=videos
/search_result.php?query=Diamond&type=videos
/search_result.php?query=FAT+ASS+WHITE+GIRL+Shaking+That+Ass+(Must+See!)+%2B+%26%238217%3B'Extra+in+Description%26%238217%3B%26%238217%3B+*Reupload*&type=videos
/search_result.php?query=Ghetto+Barbie&type=videos
/search_result.php?query=Jucci+Montana&type=videos
/search_result.php?query=Juicy+booty+Toy&type=videos
/search_result.php?query=Maliah+Michel&type=videos
/search_result.php?query=Melyssa+Milan&type=videos
/search_result.php?query=Mrsz+SoopedUp&type=videos
/search_result.php?query=Nya+lace&type=videos
/search_result.php?query=Sultry+Simone&type=videos
/search_result.php?query=Tacy+Plush&type=videos
/search_result.php?query=Whooty&type=videos
/search_result.php?query=ass+shaking&type=videos
/search_result.php?query=big+booty&type=videos
/search_result.php?query=girls&type=videos
/search_result.php?query=jalisa+elite&type=videos
/search_result.php?query=one+hour+BOOTY+SHAKING+compilation+CHOCO&type=videos
/search_result.php?query=pinky+rosay&type=videos