Students just don't like when their teacher starts behaving like a student himself. Stay professional, help students with schoolwork, listen to them, talk about their lives, but remember who you are. Even if you are a young specialist, and you are almost of the same age with your students, there is no need to use all those slang words (even if you use them in your everyday life).
Your students will find it rude and unprofessional. As far as you understand, this is not the best method to get a good reputation. Your students just will not take you seriously.