A "jimmy" is somebody who is annoying and very mean and rude. This person aka a "jimmy" can be anybody from a hacker from a game to an opponent in the game. Or, somebody you dislike.
A once legendary-status meme god. Decided to "retire" from YouTube after getting salty as fuck because his videos were getting more recognition on low qualityFacebook reposts.
"We need more dumb fucking Cory in the House memes, my guy."
"Too bad Jimmy2296 stopped shitposting- he was great at making shit-tier cory vids."