A prominent theory suggests that the surreal and often nonsensical events in 'Regular Show' are a result of the characters, particularly Mordecai and Rigby, being under the influence of drugs. This theory posits that the entire series is an extended hallucination, explaining the bizarre scenarios and character transformations.

Impact: High. This theory reframes the entire series as a commentary on escapism and the potential consequences of substance abuse, adding a darker, more complex layer to the show's comedic facade. It encourages a re-evaluation of the show's narrative intent.

In the source video, this keypoint occurs from 00:03:08 to 00:06:08.

Sources in support: Host 2 (Host), Host 1 (Host)