FOX has revealed plans to unite their feuding flagship cartoon families next fall, in what will surely be the most controversial TV crossover since Fred Flintstone met George Jetson. EW reports that the Simpson and Griffin clans will meet during an episode of Family Guy called "The Simpsons Guy," in which Peter takes his relatively-Albino family to Springfield.

Reported "plot lines" include Bart impressing Stewie with his elementary school mischief, Homer and Peter drinking beers and talking about, um, beers, Lois and Marge discussing how to maintain attraction to their respective alcoholic husbands, and perhaps most interestingly, Lisa helping Meg discover what exactly makes her special. (Spoiler Alert: Probably nothing at all.)

Fans have speculated on the likelihood of such a meeting, claiming that Family Guy creator Seth MacFarlane and Simpsons creator Matt Groening have been rivals since MacFarlane's show debuted in 1999. But MacFarlane shrugged off the rumors in a DVD commentary, saying, "Matt's just a cool guy, and fortunately neither of us was ruffled by any of that stuff." Groening described the rivalry as "very affectionate." Still, Simpsons fans remain adamant that MacFarlane steals from Groening regularly.

During the Family Guy episode "Movin' Out (Brian's Song)," FOX cut a Simpsons parody that lives on in repeats airing on Adult Swim and TBS. Below you can watch a Simpsons intro scene featuring Family Guy characters: