Girl in my cl always has to make crude jokes.?

Like the other day when we where having a course on somethingng one of the talkies was talking to a woman on his break and she was like "Ijust jst agaiin them havin with his hot sweatty body blah blah blah". She always makes jokes like this and everyone in my cl likes her. I don't and she is moody with me somtimes. Why does she do this . I wouldn't mind now and again but 8/10 times it's one. How do I dal with her.?