<< Funny this post came up now, I was just in a stall and the guy next to me was tooting to beat the band. >>
I think my favorite was when I was doing my business (#1) and a guy in a stall let out one of those "silent but deadly" but it was still loud enough to hear. I heard him take a wiff and went "whew" then he chucked and said "you better run"
Classic.