I made a report like this back when tridents were introduced, but i feel like now is an appropriate time to remake it, mainly due to the fact that last time was considered invalid because I suggested a new feature.

ehem anyways...

How to reproduce:
Step 1: Enchant trident with riptide (preferably III)
Step 2: Look straight up, and keep throwing the trident
Step 3: Have a good excuse for when you land on the ground and die.