I think if I have to go through BOS or they start doing this in other airports, I'll start bringing along some copies of The Watchtower that those Jehovah's Witnesses folks keep leaving on my front door.
So when they ask me what is my destination, I'll just hand them The Watchtower and say "Heaven." If they are like most folks who encounter the JW's they will flag me by as fast as they can! And as I pass, I'll say, "Have a blessed day!"