Talk:Cell Phone/@comment-4332975-20151207062206

The Papyrus call doesn't seem to matter. If you tell the truth and then don't change your clothes after the fight, he calls back later to say that he knew that his suspicious behaviour would tip you off and so reported what you told him faithfully, "knowing" that someone as clever as you would change clothes. If you lie, or tell the truth then change outfits, he lies to Undyne because he's "a good friend", and somehow correctly guesses what you're wearing. I've not tried lying then changing clothes anyway, but I would be willing to make the educated guess that it results in the same thing, and no matter what Papyrus ends up telling Undyne exactly what you have on.