Reminds me of a funny time when some friends and I were running to get somwhere and that included a staircase. I had a fart brewing so in the middle of running up the staircase I stopped dead in my tracks. My friends behind me didnt know I was stopping so they all crashed into me. The guy behind me pretty much crashed face first into my ass and that was the precise moment when I let a big one go. Hilarity ensued