A small, but petty, revenge
My neighbor down the road has an odd obsession with his yard. I'm sure you've all met the type. His yard has to rival most golf courses. Has specialty equipment attached to his mower to ensure alternating stripes in the yard. Constantly tending his shrubbery to ensure it's pristine and geometrical precision.
You know ... a twit.
Mine, unfortunately, has been working diligently to form an HOA for the entire time he's lived here. Thankfully, the rest of us are more of the anarchist types, so he's never managed to get any traction. Not that this stops him from pretending he is the president of an HOA, of course.
Which means, every single time I decide to whack the collection of weeds that passes for my yard down to a manageable size, he simply must come over and harass me the entire time I'm working, pointing out how my bushes are growing wild and how my walkways are never trimmed, offering to loan me his electric edger so that I can join the rest of civilization, and on and on and on.
I do my level best to ignore him while I push my old mower around, but it's like ignoring a mosquito and just as annoying. So, I decided to give him something other to worry about and started taking my sister's dogs for long walks as a favor to her, letting them run through fields, splash through rivers, and otherwise collect as many tickclovers and cockleburs as possible. Then, since I am such a good brother, I make sure to brush them all out of their coats before returning the pups to my sister.
Then, since I am a petty asshole, I scatter the tickclovers and cockleburs over the erstwhile president's front lawn on my way home. After a couple of weeks, his once-perfect lawn is a mess of bloody tough weeds, and he's constantly out there, weeding and spreading herbicides, even while I'm mowing.