 After Kaufman unleashed a profanity-laced tirade on Lawler, culminating with Kaufmann throwing a cup of coffee at him, Lawler stood up and then slapped the comedian out of his chair and off the stage.Kaufman then continued cursing Lawler as he (Kaufmann) stormed out of the studio.The antics of Lawler and Kaufman made the NBC network executives uneasy, believing that the hatred between the two was real and that mayhem could break out at any time.