The critics and fans are apparently almost unanimous in declaring this one of the best episodes of the entire series. I seem to be the only person who didn't like it. There were a few funny moments, sure, but overall, it was way too mean-spirited. A good chunk of the things that they confessed to weren't charming little pranks, they were serious dick moves that were completely out of character. Especially Abed. Yes, he's weird, and he struggles socially, but it's not like he's completely unaware or inconsiderate of other people's feelings and emotional needs. It's something that he's clearly shown in the past, after all. Character development, what a concept.
Also, there was a lot of really bad gross-out humor. Maybe this is just a personal thing, but I've never liked gross-out humor. In terms of comedic integrity, it's one step above fart jokes. And more importantly, it's something that
Community's never done excessively in the past, and for good reason. It was kind of sad to see them sink to the lowest common denominator in this one.