You know how the rhythm to "We Will Rock You" by Queen goes

    Stomp Stomp Clap, Stomp Stomp Clap

The "Claps" are on 2 and 4, the first stomps of the pairs are on 1 and 3. Now imagine some boob wearing his sunglasses like a hat and a popped collar starts clapping on 1 and 3:

    Stomp Stomp Clap, Stomp Stomp Clap
    Clap              Clap

That'd be annoying. The looks on Harry Connick Jr.'s face before he fixes the clapping tell it all.