I had meant to give Lucario an answer to his question in this thread but then stuff went down and there didn't seem to be much point. But on the off-chance our Pokémon lover is reading these forums anonymously, I shall give the answer to my amazing Lucario knowledge.
This started with Lucario wondering how I knew he was allergic to cats as he asked here:
Asshole.
Srsly tho how did you guess that?
The answer is quite simple. I was just making a joke. It was actually sort of insult. Dasmos mentioned that he missed Perm's rotating avatar which included a kitty picture. Lucario jokingly asked I wonder why with the answer going unsaid that it was because Dasmos uses avatars with cats in them. It a great forum trademark for Dasmos.
I, however, decided to make the joke that the reason Dasmos liked it wasn't for his normal cat love but because Lucario was allergic to cats. Therefore, the Perm and Dasmos would be sending an unspoken message to ward off Lucario from being around them by having cat avatars. I didn't know if Lucario was allergic or not and it didn't matter. It was just a wisecrack that his assumption of the answer was wrong and it was really that people sort of disliked him.
It was then that Lucario volunteered the information that he actually was allergic to cats. As such, I'm not sure he realized what my remark was supposed to imply but was just wondering how I could have figured that out. I hadn't figured that out. Lucario just thought I did and I left him thinking he was right. However, I then decided to be even more bold and try and guess so more information about him that he hadn't revealed in order to see if I couldn't psych him out further. I settled on the idea of pretending I was actually someone at his school like teacher.
I knew where he lived since he's mentioned it before and it is in his profile. However, when entering that info in Google along with school and high school, I discovered a lot of results and it suddenly didn't seem like I'd be able to pull the trick off. But I had another clue! While people were making jokes of Lucario being a dupe account of mine, Lucario mentioned wearing a school uniform. I remembered Lucario made a thread posting pictures of himself and culinary dishes he created at school.
Was it in one of the pics i posted?
Almost. Finding the Lucario cooking thread and reading through it, I couldn't find anything that explicitly named or gave away the school. However, Lucario did show some cookies he said he made for the school's biscuit sale. Adding that bit of information of a biscuit bake sale to the Google search narrowed it down to a couple school newsletter pdf's. Taking the school names from the newsletters I found, I looked them up to see if they mentioned anything about cooking class or school uniforms. One of the schools showed kids wearing an green and orange/yellowish type uniform that looked similar to something Lucario was wearing in one of his cooking photos. Since the other students in the background were wearing the same color clothing scheme, I figured that had to be school uniform he was taking about. Not finding much else for proof, I decided to take the chance and declared I was football teacher of the school.
This declaration did not get the reaction I hoped for. Compared to the cat allergy, my knowing Lucario's school seemed like no big deal at all to him. He didn't say I was wrong but he also didn't say I was right. So, I stuck to my guns by just joking around in a general matter and finally asked if I was a member of his school board. To which he asked the quoted question above of whether the name was in one of his pics. It was then that I knew I was right and had correctly discovered and guessed his school after all. And that's how I knew all about Lucario's life just like I know about everyone else's here. Ha ha ha ha ha! I am Treize Khushrenada, Ace Detective! as I've often said before. Look on my works, ye mighty, and despair.