Oh, flatulence. What's not to like?
Reminds me when a student went into a corridor leading to English instructors' offices and, after noticing the instructor he wanted to see was gone (or any professor, for that matter), started farting again and again while snapping pictures of notices posted on the doors of several professors. I was sitting by a desk near the entrance to the corridor when it happened, and I looked at him half annoyed, and half amused, but he paid me no mind.
Later, he returned to the office with the sought-after professor, no longer farting, and talking and acting in the most dignified manner: please this and thank you that, and jolly good day to you, sir.
Then an hour later while I was preparing for instruction in another building by writing material on the white board, that same student stumbled in, perhaps looking for another professor.
And my favorite part: Half way into the first sentence out of his mouth, his eyes met mine and there was a moment of recognition: that is the same guy from earlier.
Without another word, he stumbled right back out of the room.