Trey Parker and Matt Stone are accustomed to finishing South Park at the last minute, but they have never missed a deadline until a power outage struck their studios Tuesday and forced them to delay an episode for the first time in 13 years.

As it has been documented several times, including the special "South Park: 6 Days to Air," series creators Parker and Stone generally come up with the idea for a show, animate and voice it, then send it to Comedy Central all within six days.

A power outage Tuesday put an end to their race against the deadline, keeping their computers down for several hours and not allowing them to complete episode 1704, "Goth Kids: Dawn of the Posers."

"It sucks to miss an air date but after all these years of tempting fate by delivering the show last minute, I guess it was bound to happen," Parker said in a statement posted on their official website. Accompanying the statement were several photos taken as Parker, Stone, and the rest of their staff gathered in a dark studio.

Instead, Comedy Central aired classic episode "Scott Tenorman Must Die" while South Park's official Twitter live-tweeted with polls and trivia.