Sneak peek at 'Six Days To Air: The Making Of South Park' documentary -- EXCLUSIVE VIDEO

When EW recently spoke with Trey Parker and Matt Stone about the new documentary Six Days To Air: The Making Of South Park, the pair promised that the film would be a relatively sober affair. "It's about the making of the show," said Stone. "It's not a documentary that's going to be like, 'Oh my god, here's Matt taking a p—.'"

And, yes, the exclusive clip below — which finds Parker and Saturday Night Live star Bill Hader recording voices for the recent episode "You're Getting Old" — is a urination-free zone, although not technically a defecation-free one as their respective characters ruminate on the doubtful appeal of "Steamy Ray Vaughan" (a.k.a. Stan's dad Randy).

Six Days To Air: The Making Of South Park premieres this Sunday at 10 p.m. ET on Comedy Central. Check out the somewhat NSFW video and tell us what you think.

Read more:

• 'South Park' mid season premiere: Asperger's syndrome gets the Cartman treatment
• 'South Park': Matt Stone and Trey Parker name their 15 best episodes (and 53 worst)