I grew up going to a Lutheran church, and at every special service, holiday service, or baptism I ever saw, the minister would always put out the call for any new/wannabe members to come up and speak with him and the congregation. Usually no one came up, but all the old people would always turn around and stare up the aisle in anticipation of the Runnin' of the Lutherans.
One Sunday, one of my Confirmation friends decided to be funny and march up the aisle and shake hands with the minister. Minister decided to have a little Bible pop quiz with him, which the kid failed. He had to go home, study his Catechism, and the next Sunday, the minister brought him back up at the end of service for another quiz. I think the old people approved.