being "cool" is all relative.
Harvey Fierstein once said:
Never be bullied into silence. Never allow yourself to be made a victim. Accept no one's definition of your life; define yourself.
people that are so [overly] concerned about how others perceive them are sad, people that are sheep and follow in their example are worse. I think those people that can think for themselves and be themselves are the coolest people of all.
Belittling other people or being condescending doesn't make a person cool, it just proves their insecurity. People that do things purely for other people's reactions and try to make themselves seem unique and different and eccentric, they aren't cool either.
That's just my option though
You can form your own.