Ever been taken for a KNART or a DICRO? It's not a very nice thing. It can set your mood off a few kilometers, that's for certain.
So what is a knart or a dicro? Well, let's see if we can verify matters for you. (Note the pun, please; I don't get many of these in.)
A knart is something between a con artist and a fart. I think you catch my drift here. Someone who tries to be sneaky but does not succeed at it.
A dicro would be a bit uglier. A dick rover if you must know. Someone who is just plain mean and doesn't care that they are mean and runs you over without giving it a second thought.
So now that we are up to speed with those two security verifiers, lets try to be nicey nicey. You definitely won't want to be called either one.