"Please define 'shush you at the GI'"

At the GI I shall mingle with the crowd, remaining incognito, keeping a safe distance from Pierre, yet being close enough to both watch any movement of his lips and hear any sound that emanates from his mouth.

I shall then lie in wait until, during a song, Pierre makes an utterance. At this point I shall bound forward and say "Shhhhh" in a very condescending manner and thereby admonish him.

Well, you did ask!