Well, it's a non existent principle, so it doesn't have a name. The principle that prevents you original thought from happening, I am not sure. Read up on fluid mechanics until you find a principle that specifically applies and there you go.
But I don't think there is any one thing that would apply, that's why I was having a hard time coming up with a conclusive answer, even though I understood the principle. The closest thing would be the principles of syphoning. They explicitly "prevent" that hypothesis from existing.
Also think, even though it is an easy conclusion to come to, it is also easy to disprove with a container and a straw, so there may never have been a specific principle applied to it. It just that other principles prevent it.