He wasn't really proving his point with the sudden appearance of the disco ball and dancing. In fact, it was having the opposite effect. He laughed as he heard the music and knew what was coming. And with a sigh, he stood up and danced alongside Sirius, holding the man's hands and shaking his head.
"I was wrong. You're not just pissed, you are really pissed!"
While it wasn't his favorite genre, Remus appreciated it none the less, impressed by the atmosphere and grinning as he looked around.