Facebook help? 10 points?

[Mai Umino]

A have a couple friends who I don't want to block because I know them from school, but their constantly trying to friend all of my friends, even people from other states they don't know, and it's pretty irritating. They've said stupid things like their competing with me, and said they want as many of my mutual friends as they can get lord knows why.. but I don't want to just completely block my friends list from everyone seeing, so I was wondering if anyone knows ow you can block your friends list for just certain people? Thanks will pick best answer for 10 points <3