Wearing a blue helmet and waving British flags, London Mayor Boris Johnson tried to zip line over the crowd during his entrance to a BT Live event at an east London park screening the Olympic Games.
After losing momentum in the middle of the line, Johnson awkwardly dangled about 20 feet over the crowd for five minutes. Staff were eventually called over to drag Johnson along the wire to safety.
A Johnson spokesman told the UK's Telegraph that though the mayor was unfazed by the mishap, "the judges will rightly be marking him down for artistic impression."
Twitter users were on hand to snap pictures of the incident, which hardly dampened UK Times Columnist Caitlin Moran's enthusiasm for her city.
UPDATE: There's video! Johnson remains in admirably good humor throughout the ordeal.