Whatever your classroom management style is, though, there is one thing that should be in common among all of them: don't tolerate disrespect.
You should always have in mind a line that is too far for students to cross with you. It is much better to know what that line is ahead of time instead of just trying to react as it happens.
Not tolerating may be in the form of a formal consequence or it may even just be a comment that lets the student know that the behavior won't be allowed.
However you decide to handle disrespect from students, don't let them get away with it. Respect for adults and authority is an important lesson that students can learn. Just don't be a crazy person and overdo it.