There’s a scene in Butch Cassidy and the Sundance Kid where the pair of outlaws are debating whether to jump off a cliff.
They’ve been cornered by the posse chasing them, see, and they only have two options— come out and fight their pursuers (and almost certainly getting killed or captured) or dive into the rocky rapids far below. Butch spends several minutes trying to talk Sundance into jumping. It takes some doing, but Sundance finally— reluctantly— agrees to jump.
Right before they do, Sundance hesitates and tells his partner in crime that he can’t swim.