Fourth Wall Breaks

From Homestar Runner Wiki

Once in a blue moon, the H*R characters "break the fourth wall" by recognizing their existence as cartoon characters on a computer screen rather than in a fictional world of their own. Emails in which they do this are flashback (they extend the size of the display area and Homestar is "behind the black"), for kids where Strong Bad alludes to the idea of children at home watching the emails, the process (the entire email implies that Strong Bad is aware that he is a cartoon being watched by people at home), huttah!, where The Cheat actually watches the e-mail on his own computer, extra plug (the scene at the end with the cast making a fake e-mail give the impression that Strong Bad knows someone's watching, and that they want to see the e-mail finished), virus (the characters recognize that they are in a cartoon), and animal, where Strong Bad says goodbye to everyone.