When Bo is talking to Cheyenne after singing his song, an earpiece is clearly seen in his left ear. In the next cut to Bo it is gone.
While tying Glenn's tie, Amy performs the same actions (specific loops or flips of the tie) repeatedly.
When first confronting the reporter, Dina points to her own eyes, then flops her wrist so that her index and middle fingers are pointing towards the reporter, with her fingers facing up (the joke being that this is not how the "I'm watching you" action is typically performed). When the camera angle switches, Dina's hand is suddenly positioned so that her fingers are pointed down (the typical way that the action would be done).