Chef is suing a record company for copyright infringement. After the plaintiff rests, the record company's attorney, Johnnie Cochran (voiced by Trey Parker) stands up and presents "the Chewbacca defense" - irrelevant information unrelated to the case.
Under MR 3.4(e), a lawyer is not to "allude to any matter that the lawyer does not reasonably believe is relevant." The Cochran character openly admits it is not relevant.
This defense also violates MR 3.1 (meritorious claims and contentions). It is a waste of time, in violation of MR 3.2 (expediting litigation).