Episode(s): "Bedfellows" (Season 1, Episode 2)
Air date: 9/19/1993
In this episode Heffer's room is rented out to mice when his father, George Wolf, gets laid off from his job. With nowhere else to go (Heffer's treehouse can't support him like it used to) Heffer turns to Rocko, who happily allows Heffer to stay at his place. However, the two's different lifestyles lead to conflict and by the end of the episode, Rocko is chastising Heffer for taking his hospitality for granted. Fortunately, Heffer returns home with his family and he and Rocko remain friends.
The moral of the story is this: Sometimes you will need to help a friend that's in need more than you are, but also make sure that friend isn't taking your hospitality for granted by, you know, having nudist parties without your approval.