What does “sketchy” mean?
Sketchy in this case means he thinks he is a thug, never wears a shirt, often drinks outside in the driveway with his thuggy friends, drives 100mph through the alley, and lives in the seediest apartments on Earth. I don’t want a confrontation with him.
It doesn’t matter what “sketchy” means. The first best thing to do is to talk to him and explain the problem to him. He might actually be understanding.
4) someone or something that gives off a bad feeling
http://www.urbandictionary.com/define.php?term=sketchy