Every once in a while at a temple or Dhamma center a n00b will attend and ask, "I think I am enlightened, can you certify or tell me for sure that I am enlightened?
If I am asked, I'll tell them "you're not enlightened."
n00b: "how do you know?"
Me: "I can tell."
n00b: "how can you tell, are you enlightened?"
Me: "No, but I can see that you are not."
n00b: "how can you tell?"
Me: "Because you asked, an Arahant wouldn't have to ask."