Swiping money at the church

Went to church last Sunday. I like to from time to time just to mess with the poor attendance lady. When we sign the questionnaire inserted into the bulletin, there's a space inquiring if we are a member or a visitor. I always put a ? between the two, like I don't understand. But she doesn't know that, so as far as she can tell, I may be saying, "I ain't sure."