Almost any word can be a verb. Probably the best examples to demonstrate this are expressions to express intoxication:
I was hammered
I got absolutely roof-topped
Or, to some examples of a British stand-up comedian:
I got utterly gazebo-ed, Completely bungalowed
Yes, you can indeed get "so ladle'd" and provided you say it in the right way (hint: emphasize the past participle), everyone will know what you're on about. Be careful, though, because some nouns have a rather specific, and sometimes deviant meaning when used as a verb (Teabag, scissor, spoon...)
I can imagine my using hello as a verb in certain cases, to convey a certain image/feeling:
All he did was helloing the guests, but refused to lend a helping hand.
Or, if I were to tell you of some formal happening where I felt as the odd one out, I might say something like
I helloed a couple of people, but I felt like a right git doing so
With this, I'd hope to conjure up an image of me, standing in a corridor, with a rented tuxedo that doesn't quite fit, being nervous and hoping to be able to sneak out ASAP.
However, I'd say "hello" is quite commonly used as a gerund, which is a verb used as a noun.
So you might think of the following sentence as a word, commonly used as a noun, being used as a verb, that is in turn being used as a noun again:
Your helloing everyone was a sight to behold
Then again, you're more likely to say:
[You] saying your hellos was a sight to behold