Episode Title:Impotence.Episode Description:Beavis and Butt-Head watch a TV ad for Leibowitz Impotence Clinic. They wrongly believe that being impotent means being unable to get sex, and go there thinking that they will receive advice about how to score. Dr Leibowitz is puzzled because the duo are easily aroused. The nurse refuses to examine them because they have erections. Leibowitz prescribes them saltpeter.