Hmm. Smaller nozzels through a larger hole -- maybe I'm tired, but my Fisher-Price brain says that shouldn't be a problem. Large nozzel through small hole - that's a quandry. I though about just trying to hold it there...and realized the potential mess from "drinking from a fire hose" -- but kinda got the same result.

You can bet I'll never keep the "auto lock" on the nozzel again (but how are you supposed to know when it's full?