When Drake and Josh mistakenly assume that Walter's suspicious behavior means he is having an affair, they decide to take matters into their own hands, but ultimately end up cheating only themselves.
Walter says he can't make it to Josh's career day at school due to a business meeting, but Drake shortly thereafter overhears Walter on the phone making secret rendezvous plans with a woman. He shares his suspicion of Walter having an affair with Josh. They decide to remind Walter about how awesome Audrey is by making him breakfast. When that fails, they go after "the other woman."—statmanjeff