Have you ever met stuck up guys? How come they are so cocky?

I've met some really stuck up guys(even they look plain average) and they barely look at you when talking to u..and seem very cold,as if they don't wanna waste time on u.and feels like 50% of hot guys are sorta stuck up..or they are just nice to their friends.. you guys feel the same or is it only me? like I'm not" hot" enough to be their friends
Have you ever met stuck up guys? How come they are so cocky?
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