The It's Always Sunny Theory That Changes Everything About AP Bio

In "AP Bio," fired Harvard professor Jack Griffin (Glenn Howerton) returns to his hometown of Toledo and teaches AP Biology at his old high school. The character is a narcissistic jerk, which seems familiar to Howerton's "It's Always Sunny" character. In a Fan Theories Reddit post, Jack feels so familiar that some fans theorized he's part of a nightmare for Dennis. The post explains that Dennis went to sleep one night only to be stuck in a dream where Jack represents the success Dennis wanted but failed to achieve. Instead, Jack is stuck teaching honors students in Ohio. We can just feel Dennis waking up in cold sweat after dreaming up this scenario.

It's a solid theory that could potentially link the two shows, but Howerton officially disproved it. In a YouTube clip from "The Late Late Show with James Corden," Howerton praised the fan theory but explained it's not possible, seeing as he had no hand in creating "AP Bio." As he explained in the clip, the show was in production a while before he came aboard and was created by "Saturday Night Live" alum Mike O'Brien (via Deadline).