Even in its 27th season, The Simpsons is still making history.
For the first time ever, the long-running animated series is airing a Halloween episode, in addition to the beloved "Treehouse of Horrors" special -- and ETonline has your exclusive sneak peek at the one-of-a-kind episode!
On this Sunday's star-studded event, "Halloween of Horror," Nick Kroll and Blake Anderson are lending their voices as Lem and Dickie, two disgruntled employees at a Halloween pop-up store.
When Homer causes them to lose their jobs, (because of course that's something that he would do!) the pop-up carnies seek revenge on the donut-lover by robbing the Simpson's overly decorated home while Homer and Lisa hide in the attic.
In our behind-the-scenes first look, above, Kroll confessed that guest starring on The Simpsons has been a "lifelong dream."
"This is full-circle for me because as a child, my family sued The Simpsons because I, in fact, ate my shorts," the 37-year-old comedian joked.
Catch the first-ever Halloween episode of The Simpsons on Sunday, Oct. 18 at 8 p.m. ET/PT on Fox.