people

I work at a testing center as many of you know. When people pass or fail, they all have interesting reactions. This one guy yesterday was so happy, he was trying to be funny but it wasn't working. I don't think he noticed. He sure was laughing. It was getting on my nerves. I kinda wanted to slap him and say "just shut up and listen to the instructions I have to give you so you can leave and so I don't have to listen to YOU anymore" but I guess that could have been considered unprofessional. Then trying to fingerprint him was difficult. He was over 300 lbs so I couldn't just take control of him the way I do other people. Don't people know what the word RELAX means?! He wouldn't stop talking long enough to listen to what I needed him to do. Again, I had an impulse to act unprofessionally. I wanted to spray him in the face with a spray bottle we use for their hands if their skin is too dry. But alas, I need this job a few more months for the insurance.
I think I'm in a bad mood. Is it wrong to miss people who you can no longer contact because it would be considered inappropriate?