Lol, dumping the seeds on his driveway/yard attracts lots of bird poop on his car. Weed killer sprayed on his lawn makes big dead patches. You could write a message or just make a picture if do random splotches. And grass grows back eventually.

pretty sure they are saying cover their yard (although I would say driveway) in birdseed so tons of 🐦 visit and leave thier special calling cards all over the place. the weed killer would be for writing messages in their grass crop circle style. both scenarios are likely better left to fantas...