A friend of mine recently got married. She was pretty mellow throughout the whole lead-up with one minor Bridezilla moment.
All the girls in the wedding party were sitting around tearing apart off-the-shelf bouquets to rebuild into works of art. A couple people kept coming downstairs to ask the bride-to-be a million questions. It was actually only a couple of questions, but apparently it was still annoying to the nth degree.
We were actually thinking that perhaps a reality TV crew would be popping their heads out from around the corner at any moment, when BTB says, "I have to go poop. Be right back."
Maybe it was the discomfort that was making her crazy, and maybe it was the poop that wasn't allowing the caffeine in the coffee to be absorbed, but whatever it was, when she got back, she was happy and alert. And once again mellow.
So, if someone's ever suddenly really bitchy and uncomfortable-looking, they may just have to poop.