This is probably a little late, but...I have a rather famous meme that I like to use, known by people such as Omega Blademan and Black Terror.
Essentially, if someone does something ridiculous, or something that doesn't make sense, I just blurt out, "what is this i dont even," and then I walk off. In some topics, I'll occassionally post something like that if the topic doesn't make sense.
AndySonSon