I’m sure when you looked at the title of this post, you were like WTF? If you don’t know about Homestar Runner and Strong Bad Emails, then you need to check it out. It’s an online cartoon that is produced (typically) weekly by The Brothers Chaps.
There are now 149 Strong Bad emails, where a cartoon character in a mexican wrestling mask answers emails that he gets to the site. There are other cartoons, but the Strong Bad emails are the main feature. The cartoons are very PG rated, but funny for all age groups.