Our congregation shouts out "Rag up your kilt!" during Wild Rover. And calls out the answering "Hey Now!" in Iko Iko. And a few other well rehearsed drunken shouts in other songs. And just a general greet-for-all during Rant & Roar.

Our congregation consists of the shifting faces at the pub we regularly play at. Like we say during the "SOCIABLE!" toast a few times a night, where we bid them drain their glasses, then around and introduce yourself to someone you don't know and shake their hand:
"This is just like church... but with beer".