You don’t hear me preaching on a Sunday

When you tell someone that something is a bad idea, they don’t believe you, and still do it anyways. The equivalent of “I told you so.”

Me: “We probably shouldn’t do anal.”
Us: *do anal
Wife: “Great, there’s shit on the comforter.”
Me: “Yeah, I knew this would happen, but you don’t hear me preaching on a Sunday.”