Mr. Garrison Senior's drinking buddies appeared in the Season Three episode, "World Wide Recorder Concert".
In the episode, Mr. Garrison is upset that his father, Mr. Garrison Senior, did not molest him as a child. Mr. Garrison Senior is frustrated with his son's situation and goes to the bar to drink away his troubles. There, he talks to his drinking buddies about the situation and asks them for advice. However, they do not listen to him and instead turn the conversation into a scruples joke. Frustrated, he leaves the bar.