There comes a time when every person realizes that somewhere along the line, they irresponsibly stopped paying attention to the friend requests they were sending and accepting. At that moment you start to realize how many of your Facebook "friends" you actually want to punch in the face. You're then faced with two options: Option A track down every person you feel is wronging you somehow on Facebook and punch them in the face. Option B "The Purge."
"The Purge" involves going through your list of Facebook friends and "unfriending" all those you feel bring nothing good to the table.
It would be prudent for you to begin with the following people:
Now, once you've completed "The Purge" you may be alarmed by the small number of friends you've left yourself with. But even if 800 just became 125 there's no need for concern. Cherish the people you've kept. And if one day you find that somehow your friend count has dipped without you purging, make sure you stop doing whatever douchebag things you've been doing on Facebook.