Give them a hard time for raising you in a religion with a history of prophetic failure, and a history of destroying families who's children leave because of those failures.
That was their choice and they have to choose whether, or not, to destroy their relationships with their children when they can no longer pretend that the WT's failures are not covered by Deuteronomy 18:20-22. If they want to claim Jehovah hasn't failed, it is up to them explain any literature you bring to the table.
Start with the likes of typing 'selling homes short' into their WTCD and asking them to explain what it means without changing the subject or treating you llike a knuckle dragging retard.