There are a lot of memes asking you to "tell me one thing you like about me" or saying "reply to this and I'll tell you why I'm your friend" or whatever. This isn't one of them.
For this meme, tell me one thing you don't like about me--something you think I'm not good at, or some quality you don't like, or whatever. There's gotta be something. Trick is, make sure it's constructive--something I can improve. Don't bitch about how you don't like my accent or the fact that I'm n thousand miles away from you or I'm too American (although "ethno-centric" would be fair game). If you agree with something somebody else said, you can post a "me too!" reply, but add your own annoyance too.
Just keep it civil.