Sometimes, revenge plans can have unexpected consequences that make the whole story significantly more entertaining. We know that in a perfect world, our plotting and scheming will go according to plan. But as we know all too well on this site, this is by no means a perfect world. Plans can backfire, and in this case, they backfired gloriously. This dude shared his story via this thread on Reddit's r/pettyrevenge subreddit. He prefaced his tale of vengeance with some background about his recent…