I can't say as that I haven't heard of this before. I actually used to take people's carved punkins and throw them out in the street if they didn't give me a good enough treat. I seem to have grown sweeter with time. A serious idea for ya, tho. If you do have an idea of who it is, dump a bag of manure on their cowl. A lot of cars draw cabin air in from that area, so it would make for a lesson they won't soon forget. Just make sure you got the right car. Shootin the SOBs works better tho.