"Believe!" Everyone answered in unison, their coordination so flawless it was almost infuriating, as if not even in the classroom had they ever been this synchronized.
The unanimous response from everyone left me somewhat tongue-tied, without a clue on how to respond, even though I had only meant to tease them a bit, and now I had fallen into my own trap.
"Ha... haha, just kidding. Anyway, what are you all doing here so late instead of sleeping?" Right after the stroke of midnight, I switched topics to ease my awkward expression.