I was subbing for a HS special ed class once. They got to talking about farting and whether they were embarrassed to do it or not, and the group clown let a loud one rip. His friend of course had to follow, and then everyone who could - starting farting. Worst part of it all was that they got me and I had to practically be scraped off the floor. They cracked me up bigtime.
Ah special ed...