i fell twice at 30th and market. one time right as a messenger was passing me, i shared in his laughter.
the second time was in a crowd of people right into a slush pile. no one even noticed. i got up all embarassed and no one was even looking. both times were b/c one of my feet was strapped in too well.

now i loosen my feet as i approach a stop, haven't fallen since. (knocks on wood)