At CP many years ago, we would get many laughs by being "devious" at WWL.
There used to be a "mountain" theme on the ride (except for about the last 3-5 years of WWL's existance) that would pour water directly in the center of the boat.
We would get the attention of those in the boat from the midway & they would just stare at us while rounding the corner, never seeing the pouring water. Then WHAMMMOOO! wet riders.
Those CP employees attending to the train laughed as hard as we did.