Plop Props are generally things like feces, slimy trash, or wadded up used toilet paper gathered for the purpose of throwing at someone you don't like. Anything that makes the sound Plop when it hits it's target is a plop prop.
I have plenty of plop props for my high school principal's house and car! He won't know what hit him, but he won't want to go home or touch his car again!
by Goyoza June 24, 2010

A.k.a. "weed-free prop". Refers to any fake or "just for show" object (i.e., "Hugs not drugs" t-shirt, "Just say no" bumper sticker, etc.) that one prominently displays in an attempt to fool others into believing that he or she "shuns the Mary Jane" ("weed"), when in reality the person enjoys a good joint or bowl just as much as the rest of 'em do, and so the flashy personal-virtue-proclaiming object is merely a "prop", and is therefore just about as legitimate (NOT!) as the identically-named and moderately-pricey boating-accessory's often-grossly-exaggerated claim to consistently shrug off tangles with aquatic vegetation --- generally speaking, those much-hyped devices still get all gloobered up with milfoil and lily-tendrils just about as much/often as the standard "screws" do, and so the item's purchaser gets "screwed", as well!
Ever since pot use has become more widespread --- and even legal --- in many areas, the sales of weedless prop items has skyrocketed... what a sham!
by QuacksO August 12, 2017
