I mentioned it before, I will again. Standing for this is what truly matters... I've said that this would be my back-up tactic for YEARS. I want a life-saving royalty or something
Lolz
Also of note, this works against crocodiles and gators. Those animals both have a flesh flap at the back of their mouths that keeps water out of their throats and respiratory system. Shoving your hand down their throats while submerged will break that seal and they will release.
Thanks for posting Frank!