A lot of things determine how likable you are.  Obviously your looks and your personality are two big ones.  But here are four WEIRD things that make people like you more. 

#1.)  Asking for a Favor.  But only if you say "thank you" afterward.  Studies have found that asking for a favor and saying "thank you" actually make you more likeable than doing a favor for someone.

#2.)  How Good Looking Your Friends Are.  Researchers tested this one by setting up two fake Facebook accounts that were exactly the same.  The only difference was, one of them had hot friends, and the other didn't.

#3.)  Wearing Clothes with Brand Names on Them.  They don't even have to be nice brand names.  Just having any brand name on your shirt makes you more likeable, because it makes people more likely to trust you.

#4.)  Embarrassing Yourself in Public.  A bunch of studies have shown that when people see you embarrassed, it makes them think you're nicer and more trustworthy.