Watching Madoka Magica?¿ (I'm not)

I told my brother I was gonna watch anime, and he said "What anime", to which I blurted out "Madoka Magica" (I wasn't actually going to watch Madoka Magica at the moment, I just didn't want him to know I was watching black butler, he left me alone afterwardss.) 

What category does this fall under 😭