Should I leave his class?

Right at the introduction of the first class he asked everyone to introduce themselves. A black guy in the class introduced himself and pointed out his white girlfriend. The teacher then asked her about the strength of his package. A week later, he brought a guitar to class and played it until class ended and talked about how he still aspires to be like Bruce Springsteen (He is a math teacher). He also always tries to make our class laugh, the problem is that he's painfully not funny. One time, he challenged the student that could break-dance to a dance off: the student was great but the teacher was awful. I spent $1,000 on this class and I don't know if I should leave or not. I currently have an A in his class but I really cannot take this teacher.