Let's say a couple celebrated their 25th wedding anniversary and you ask them what they did to celebrate. Their reply was that they went for ice cream at Frosty Cones in Elizabeth, PA and then dinner and then watched the moon landing hoax debunking edition of Mythbusters.

Do not point out that they must have finished dinner by 6:30 p.m. and that Mythbusters didn't start until 9 p.m. and then ask "What else did you do?"

I don't think you really want that question answered.