Answer: Hoover
Otter and Boon suggested that they throw a party. Hoover didn't like the idea, especially after Wormer had told them that one more slip-up, and their fraternity would be no more. However, Otter reasoned that Wormer would nail them no matter what they did, so they might as well have a good time. "Are you guys up for a toga party?" (Otter) "Toga! Toga!" (Bluto) "I think they like the idea, Hoov." (Otter) "Oh, Otter, please don't do this." (Hoover)