An expression used as a nonsequitur response to annoy someone. I.E. someone asks you a serious question and you say "poopaddies" in a childish voice while staring blankly with an idiotic hypnotic smile. Usually has to be repeated several times to get a real blow up.
Nasty asstoilet paper, mainly at work, that has finger prints of the asshole before you that got their finger dirty while wiping and left their mark behind for you to discover.