Hot off the record-breaking success of "Jackass 3D," the question on a lot of minds is: How long will fans have to wait for more "Jackass"? The short answer, according to Johnny Knoxville and director Jeff Tremaine, is "not too long."

"The plan is [to release 'Jackass] 3.5' first," Knoxville told MTV News recently. "We had so much footage left over, '3.5' is going to come out online and on DVD around January. That was the last conversation we had."

"We're not sure, because it changes," Tremaine admitted. "But 'Jackass 3D' on DVD comes out after Christmas; it doesn't come out on Christmas. '3.5' probably comes out before that — not Christmas, but sometime before [the] 'Jackass 3D' DVD. We're a little confused as to what's going on, but we do have a lot of fun extra footage that we're going to put out."

The guys said they're still ironing out the specifics, but "Jackass 3.5" will likely follow in the same vein as "Jackass 2.5," with more than an hour of extra footage that didn't make the cut for "Jackass 3D." And just what bits and pieces were too hot for the feature film?

"Oh, God! There's a lot of good stuff," Knoxville said. "Just the three-minute, four-minute bit on [Chris] Pontius' penis. All the different things we tried with his wang. It's hilarious. And 'Incredible Nut Shots,' we spent more time on that than any bit we've ever shot. That turned out really good. The 'Slip and Bow,' where we pranked the guys, they were on a super slippery surface as bowling pins, and the Street Bike Tommy comes down and takes them all out, and they think that's the bit, but no. [We] had a remote-control helicopter built with paintball guns on it, and they kind of can't get away."

"They're out there on a big giant Slip 'N Slide," Tremaine added. "A big thing that they couldn't get up and run away. They just slide off. Yeah, man, there's so much, like there's the 'Rocket Ship to Your Anus.' "

"The 'Rocket Ship to Your Anus'! I was watching that today and was like, 'Man, should we have put that in the movie?' " Knoxville said. "There's a few of those bits — more than a few of those bits — in '3.5.' "

With a catchy title like that, we had to ask: What exactly is the rocket ship?

"We don't want to give anything away," Knoxville teased.

"Well, it's Bam [Margera] on one end with a string on his butt and the string connects to [Ryan] Dunn's crotch, and he's got a rocket connected to that string," Tremaine explained. "The rocket is actually a prosthetic penis, and it fires up and lands in your anus."

"Yeah, pretty clever, right?" Knoxville added. "And it plays just that stupid."

Check out everything we've got on "Jackass 3D."

For breaking news, celebrity columns, humor and more — updated around the clock — visit MTVMoviesBlog.com.