This had to be someone's (as in the bus drivers) idea of a sick ass joke...
... When I first heard the story.. I envisioned a huge bridge.. mile long or so... way up in the air....and was just shitty luck on the boats part being underneath and the onboard sewage was expelled from the bus...
now that I see this video.. and see how small the bridge was.. and how close to the boat...I am almost certain this event was premeditated, timed and carefully executed...
and it't now even more hilarious !!
BIG B