On the rare occasion that a Jehovah's Witness will talk to me, i refer to their religion as "your religion". And if they use say "the truth" i remind them that that would mean Rutherford, Knorr, and every JW prior to the "overlapping generation" teaching wernt in "the truth" then were they?
The most annoying is the book "What Does The Bible Really Teach?" which has been updated at least twice since it was first published... so the first edition wasn't what the bible really taught? Was it in fact apostasy then? Are the writers of the first edition to attend a JC for writing such lies?