High times are ahead on The Simpsons.

This Sunday's episode of the Fox sitcom will feature guest appearances by Richard "Cheech" Marin and Tommy Chong, as they arrive at Springfield as part of their reunion tour.

From there, however, the pair splits up, with a new duo forming that's comprised of Homer and Cheech ("Cheech and Chunk") and another of Skinner and Chong ("Teach and Chong"). Confused? Return to TV Fanatic soon after the installment airs for a complete rundown, along with an updated section of The Simpsons quotes.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.