Where you snub someone and snope them at the same time, telling them they aren't so smart. see definition of snope
You get an email that is a hoax, and you are disgusted that the other person hasn't looked it up on Snope, so you send them an email telling them off . . . well, because you have gotten so many emails that are hoaxes from them in the past and they continue to do the same thing, and you are tired of it. You think they are a dope.
So you snubope them!