WARNING CONTENTS OF POST ARE MOVING
Nope, no problem with the farting for me. My problem tends to be getting that last meal out before heading off, if it all works out it's a great ride home from work. It it doesn't there is this attack, and I look like the kid out of That teen movie that can't go to the WC at school, and his buds feed him exlax. I've tossed the bike to the side when I hit the door at a dash for the sacred shrine, making it just in time.
Of course this brought to mind the thought, what does LA do? I've heard pros ride and pee either in their shorts or, with the help of a friend, drop trou and aim off to the side of the road while pedalling. I can't imagine number two, and would the peoloton be chivarous if one had to pinch a loaf?