I had gone to an elder with doubts that I had. Of course they were never answered but a certain sister who was overly familiar with said elder started to befriend me, telling me she was uncertain if this was the truth, asking for my viewpoints etc. I knew what she was up to. In order to be 100% certain that she was the congregation spy I told her a huge whopper. I told her that I had a confession to make, I said I was madly in love with said elder and really laid it on thick.
A few days later said elder called me and started talking about how in the new system he would have a full head of hair, asking my age how he was a good 20 years older and to let me down gently how his best friend, next to Jehovah was his wife. I stayed calm didn`t give any reaction, and had a good laugh about it afterwards. I had successfully found out who the spy was and heard she was counselled for causing gossip.