It may be B.Y.O.D. at the Jon Stewart/Stephen Colbert comedy rallies in Washington on Halloween weekend ( Bring Your Own Diaper ): The calls of nature may be particularly loud at an upcoming D.C. event if attendees don’t have a place to “go.” Comedy Central organizers are having a hard time finding port-o-potties for their rallies to take place in a week and a half, after the Marine Corps Marathon planners snatched up about 800 of them for the same weekend. The organizers of Jon Stewart’s Rally to Restore Sanity and Stephen Colbert’s March to Keep Fear Alive, both to take place Saturday, Oct. 30, have asked the marathon staff to share the portable toilets with their 65,000 expected to attendees. But the Marines aren’t budging — they plan to lock the toilets until the morning of their race the day after, they tell the New York Times. The National Park Service requires portable toilets for events expected to exceed capacity of “comfort facilities” on NPS property, according to a department document. They recommend one toilet for every 300 people. An NPS spokesperson tells WTOP that comedy Central should be able to get more port-o-potties in the greater D.C. area. Sounds like the Marine Corps is giving them the old Semper FU . To paraphrase Rush they should go in their own pants. It will be good practice for Nov. 2nd.