Situation:

"The gang discovers multiple pieces of feces in the middle of the bed over two mornings. They investigate, bring samples to Artemis, conduct overnight watches and theories about suspects, and publicly debate possible culprits (including fabricated scenarios involving other characters). At the hearing/reconstruction scene, Frank unexpectedly confesses, saying he 'did 'em all' and explaining he committed the acts because he found poop funny. His actions include placing feces where they were found (bed, floor), which is the central wrongdoing in the episode."