"O you of little faith," Jesus said to Peter at the end of his ill-fated walk on the water, "why did you doubt?"
"Impetuous" is the word used when we want to be respectful or kind toward St. Peter; other words are used when we don't.
Still, not many of us have ever walked on water, even for a few steps. We stay in the boat. Not only don't we say, "Lord, if it is you, command me to come to you on the water," it doesn't even occur to us as a thing we could say.
But, you know, we could.
If we arrive at the other side without once getting in over our heads, that might mean that our faith in Christ never wavered. Or it might mean we just stayed in the boat.