SW: I am always forgetting your apartment number.
Dad: Ah, just ring any bell. No one here asks, they just open the door for anyone who rings. Always letting these cult people enter the building and knock on your door to proselytize.
SW: Cult people?
Dad: Yeah, just last night had to explain two gentlemen from Weight Watchers that we are not interested in their literature. Thought they would never leave.
SW: Weight Watchers???
Dad: (mistaking my incredulity for religiously motivated outrage) Yes, from Weight Watchers!
SW: You mean, Watch Tower?
Dad: Weight Watchers, Watch Tower, they are all the same.
Dad, you thought you were joking, but, as the saying goes, there's a grain of truth in any joke.