Monkey See, Monkey Don't/Fake Dad

Plot:

In another scheme to feed and shelter themselves for free, the pair approach a zoo keeper disguised as monkeys. Will they take on the habits of the crude, resident chimp, or is the simian lifestyle too grotesque even for Ren and Stimpy? Next, Ren adopts a huge, violent inmate as a son for the weekend. Can Stimpy keep Ren's short-tempered parenting style under control, or will the lumbering, childish step son (Kowalski) find a place in Ren's heart?