I have heard that, and had it applied to me!!! I have a very very very small nose, and as a child my mother and grandmother always told me to never look up when it was raining because I would drown just like a chicken!!!! Sad thing is that my nose is so small that I cannot dive without nose plugs, as the water will literally shoot right up my nose!!
It was very hard in my swim meets, they didn't like letting me use the nose plugs
