FXX is running a marathon of every “The Simpsons” episode ever? (Tent fingertips together and reply in a sinister Mr. Burns voice): “Excellent …”

From 10 a.m. Thursday until the close of Labor Day, the venerable animated Fox comedy series will air all of its episodes in chronological order, as well as feature film “The Simpsons Movie” (D’oh!).

Matt Groening’s creation began life as a short recurring feature on “The Tracey Ullman Show” in 1987. It was picked up by Fox as a regular series in 1989 and, 25 seasons later, remains a pop culture icon.

When the marathon is over, FXX will air “The Simpsons” in a regular time slot. The network also plans shorter marathons, starting with the eminently binge-worthy 24 half-hour installments of “Treehouse of Horror” Oct. 26.

The “Simpsons World” app also launches in October. Users will be able to watch any episode, accessing scenes, quotes, art and social media links.