After running into a JW this weekend (and being ignored), we decided that my not-ever-JW fiancé would go to my old congregation's public talk, get love bombed and then I'd arrive shortly after and he'd say something to the effect of "Have you met my fiancée?"
Not that he needs it proved, but it would show the marked contrast between how a person gets treated.
(I doubt we'll do it, way too many other fun things I can think to do on a Sunday...)