We heard a public talk, in which the speaker was joking about his friend. He lived in a big mansion, and had a security system with a sound system installed at his door. The JWs came knocking, and he heard one of them say to the other, "This is going to be my house in the new system."
The speaker was laughing and so proud to announce that this little comment got the householder to invite them in, and "One thing led to another, and Now he is a pioneer!"