Should I Sag My Pants (a little bit)?

BTW - I JUST WANT TO SAG MAYBE ONE OR TWO INCHES. About 95% of the guys I see daily are sagging their pants. I have asked several people why and they said they like it and it is cool. I want to know is I should do it. Let me clarify, I don't want to look like a baffoon with his pants past his , maybe just one or two inches. I wear boxer briefs. Also, should I buy compression shorts instead of boxer briefs? BBs always get loose after a few hours.