Beer Flatulence

A flatulence question?
Today, I had a couple of friends over. I served some snacks—corn chips, bean dip, beer, soda, and salsa. Well, this food had some—ahem—adverse effects on my friend Sam. He started farting. At one point, he tore one off that was so loud that one of the girls thought there was a drive-by shooting going on outside. When she found out what it really was, she got mad at my friend Sam.
Question is, has anything like this ever happened to you? Have you ever gotten “gassed up” while in a public place and had to choose between letting it go or restraining yourself?
It happened to me once in Jr High School. We were having a tour of the library and everyone was quiet “because its a library” and the librarian was explaining to our class how to use the Dewey Decimal System when I all of a sudden farted really loud. It totally happened without a warning and I didn’t even feel it coming, it just happened. I tried to pretend it wasn’t me but all the other kids were standing around me and they knew. Not to mention that it smelled really bad. Everyone started laughing uncontrollably and I was mortified. For the rest of the school year I was teased and no one let me forget about it. I actually had to go to a different school the next year because even at the beginning of the new school year people who remembered the incident were calling me names and making fun of it even still. Thank God that was over 20 years ago, but I still have not forgotten about it.
DKWD July 15th Part 2: Root Beer, The Root of All Bears