Is it wrong to judge somebody for having ghetto mannerisms?

So I had a big crush on this guy at my church cause he was very animated whenever he was worshipping the Lord and I LOVE RELIGIOUS GUYS!!! He also worked at the head office of this bank while going to school full time so I assumed that he was smart and successful as well. I saw him taking care of his fellow passengers on a bus I an I decided that he was gracious, responsible and kind to everybody. Today he was waiting to buy food and he had his baseball cap on backwards - and was running around with his head bobbing in and out like a monkey. I decided that he wasn't sexy, hot or attractive - he was just ghetto and low class. Is it wrong for me to think this about him? I don't usually have an issue with judging people but the bible says not to judge the children of God and this guy is SUPER religious.
Is it wrong to judge somebody for having ghetto mannerisms?
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