Bridge Jump

If you jump off a bridge while crying, it's suicide, but if you jump off a bridge while screaming "parkour," it's a failed stunt.

Explanation

Experiment

The humor comes from the juxtaposition of two very different scenarios. Jumping off a bridge is typically associated with suicide, but by adding the word 'parkour' it implies that the person was attempting a daring athletic feat which makes the situation absurd.