You know when you're drowning 
             you don't actually inhale until right 
                          before you black out. 

                     It's called voluntary apnea. 

           It's like no matter how much you're 
            freaking out, the instinct to not let 
       any water in is so strong that you won't 
       open your mouth until you feel like your
                              head's exploding. 

               Then when you finally do let it in, 
                    that's when it stops hurting. 

                    It's not scary anymore, it's... 
                    it's actually kind of peaceful