That kind of stuff irks me a bit as well, but I think it's human nature. It's a form of call-and-response where people can show that they're apart of the community. Friendships are built on shared experiences, and those kinds of memes are instant shared experiences that are being used to build camaraderie. I think the reason it is annoying to users like us is because it feels watered down, like a free ticket in, instead of becoming a part of the community organically. I get both sides, so I don't actively try to stop people from doing it, I just ignore it.