Boss owns a brand new building in town. One day he decides the toilet flush isn’t strong enough, so he mobilizes all staff, and at the count of three, everyone flushes all the toilets together.
Of course, the pressure’s too low, so it’s revised upwards by a LOT.
Eventually, when some poor sod goes to the loo and flushes, the pressure to flush the entire building explodes out of the loo, splattering shit everywhere.