Do not argue with the student. Engaging the student in their behavior only escalates the situation, and cold lead to more students getting involved. Instead, try to redirect the behavior by using non-verbal cues (making eye-contact to let the student know you will talk with them later) to keep the class moving, that way the learning can continue.
Do not take it personally. The behavior may not be about you, and thinking that you are being "attacked" verbally by a student on purpose might let your emotions get the best of you. However, do not ignore the the behavior altogether. It is still unacceptable, and needs to be dealt with accordingly, but only with a cool head.
Do not embarrass the student by trying to get the better of them. The sassy students are often seeking attention, and trying to "one-up" the student will lead to resentment, and will actually increase the behaviors that you want to stop.
Acknowledge/Reward positive behavior. Try to show that good behaviors can also get a more positive response, however do not reward and praise simply to get the student to behave. Most students can see right through those type of comments, and will instead act out even more.
Set up rules and consequences beforehand. Sometimes the best thing to do is to try and stop problems before they start. Sometimes it feels nearly impossible to do so, however by setting up proper rules and consequences and actually following through with them goes a long way to establish a well managed classroom.